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D089 PRINCIPLES OF ECONOMICS OA WGU 2025

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D089 PRINCIPLES OF ECONOMICS OA WGU 2025 VERIFIED SOLUTIONS & CORRECT ANSWERS Comprehensive Study Guide for WGU Objective Assessment Introduction This comprehensive guide provides 150 verified practice questions with correct answers and detailed explanations for the D089 Principles of Economics Objective Assessment (OA) atWestern Governors University (WGU) for the 2025 exam cycle. Aligned with WGU’s curriculum and drawing from sources like Quizlet and study materials from platforms such as Studocu, this guide covers key economic concepts: Basic Economic Principles, Microeconomics, Macroeconomics, Market Structures, and Economic Policy. Presented in very fire red text with silver accents for clarity and visual appeal, it reflects the latest exam standards. Each question includes an expanded explanation to deepen understanding and ensure students are well-prepared for the OA, equipping them with the knowledge and confidence to excel

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D089 PRINCIPLES OF ECONOMICS OA
WGU 2025
VERIFIED SOLUTIONS & CORRECT
ANSWERS




Comprehensive Study Guide for WGU Objective Assessment




Updated for 2025 Exam Cycle
Curated by Economic Education Experts

,Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Basic Economic Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Question 1: Fundamental Economic Questions . . . . . . . . . . . . . . 5
2.2 Question 2: Definition of Economics . . . . . . . . . . . . . . . . . . . . . 5
2.3 Question 3: Scarcity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Question 4: Opportunity Cost . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 Question 5: Factors of Production . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 Question 6: Marginal Benefit . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.7 Question 7: Thinking at the Margin . . . . . . . . . . . . . . . . . . . . . . 6
2.8 Question 8: Production Possibilities Frontier . . . . . . . . . . . . . . . . 6
2.9 Question 9: Economic Systems . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.10 Question 10: Trade-Offs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.11 Question 11: Incentives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.12 Question 12: Economic Models . . . . . . . . . . . . . . . . . . . . . . . . 7
2.13 Question 13: Positive vs. Normative Economics . . . . . . . . . . . . . . 7
2.14 Question 14: Allocative Efficiency . . . . . . . . . . . . . . . . . . . . . . . 8
2.15 Question 15: Comparative Advantage . . . . . . . . . . . . . . . . . . . . 8
2.16 Question 16: Absolute Advantage . . . . . . . . . . . . . . . . . . . . . . . 8
2.17 Question 17: Scarcity and Choice . . . . . . . . . . . . . . . . . . . . . . . 8
2.18 Question 18: Circular Flow Model . . . . . . . . . . . . . . . . . . . . . . . 8
2.19 Question 19: Resource Distribution . . . . . . . . . . . . . . . . . . . . . . 9
2.20 Question 20: Public Policy Decisions . . . . . . . . . . . . . . . . . . . . . 9
2.21 Question 21: Benefits of Trade . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.22 Question 22: Marginal Cost . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.23 Question 23: Market Resource Allocation . . . . . . . . . . . . . . . . . . 9
2.24 Question 24: Economic Growth . . . . . . . . . . . . . . . . . . . . . . . . 9
2.25 Question 25: Opportunity Cost Example . . . . . . . . . . . . . . . . . . . 10
2.26 Question 26: Productive Efficiency . . . . . . . . . . . . . . . . . . . . . . 10
2.27 Question 27: Scarcity Misconception . . . . . . . . . . . . . . . . . . . . . 10
2.28 Question 28: Economic Incentives . . . . . . . . . . . . . . . . . . . . . . 10
2.29 Question 29: Marginal Analysis . . . . . . . . . . . . . . . . . . . . . . . . 10
2.30 Question 30: Production Method Choices . . . . . . . . . . . . . . . . . . 10
2.31 Question 31: Ceteris Paribus . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.32 Question 32: Economic Trade Benefits . . . . . . . . . . . . . . . . . . . . 11
2.33 Question 33: Specialization . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.34 Question 34: Economic Equity . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.35 Question 35: PPF and Unemployment . . . . . . . . . . . . . . . . . . . . 11

3 Microeconomics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Question 36: Microeconomics Definition . . . . . . . . . . . . . . . . . . 12
3.2 Question 37: Law of Demand . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Question 38: Law of Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Question 39: Market Equilibrium . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Question 40: Price Elasticity of Demand . . . . . . . . . . . . . . . . . . . 12
3.6 Question 41: Elasticity Formula . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7 Question 42: Substitute Goods . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.8 Question 43: Complementary Goods . . . . . . . . . . . . . . . . . . . . . 13


1

,D089 Principles of Economics OA WGU 2025 July 3, 2025


3.9 Question 44: Supply Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.10 Question 45: Demand Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.11 Question 46: Market Surplus . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.12 Question 47: Market Shortage . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.13 Question 48: Price Ceiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.14 Question 49: Price Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.15 Question 50: Consumer Surplus . . . . . . . . . . . . . . . . . . . . . . . . 14
3.16 Question 51: Producer Surplus . . . . . . . . . . . . . . . . . . . . . . . . 14
3.17 Question 52: Normal Goods . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.18 Question 53: Inferior Goods . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.19 Question 54: Cross-Price Elasticity . . . . . . . . . . . . . . . . . . . . . . 15
3.20 Question 55: Income Elasticity . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.21 Question 56: Market Failure . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.22 Question 57: Negative Externalities . . . . . . . . . . . . . . . . . . . . . 15
3.23 Question 58: Public Goods . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.24 Question 59: Marginal Utility . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.25 Question 60: Fixed Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.26 Question 61: Variable Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.27 Question 62: Technology Impact . . . . . . . . . . . . . . . . . . . . . . . 16
3.28 Question 63: Consumer Decision-Making . . . . . . . . . . . . . . . . . . 16
3.29 Question 64: Market Demand . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.30 Question 65: Supply Determinants . . . . . . . . . . . . . . . . . . . . . . 17
3.31 Question 66: Demand Determinants . . . . . . . . . . . . . . . . . . . . . 17
3.32 Question 67: Price Elasticity Types . . . . . . . . . . . . . . . . . . . . . . 17
3.33 Question 68: Total Revenue and Elasticity . . . . . . . . . . . . . . . . . . 17
3.34 Question 69: Externalities Correction . . . . . . . . . . . . . . . . . . . . 17
3.35 Question 70: Law of Diminishing Returns . . . . . . . . . . . . . . . . . . 18

4 Macroeconomics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 Question 71: Macroeconomics Definition . . . . . . . . . . . . . . . . . . 18
4.2 Question 72: Gross Domestic Product . . . . . . . . . . . . . . . . . . . . 18
4.3 Question 73: Real vs. Nominal GDP . . . . . . . . . . . . . . . . . . . . . . 18
4.4 Question 74: Inflation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Question 75: Unemployment Rate . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Question 76: Types of Unemployment . . . . . . . . . . . . . . . . . . . . 19
4.7 Question 77: Aggregate Demand . . . . . . . . . . . . . . . . . . . . . . . 19
4.8 Question 78: Aggregate Supply . . . . . . . . . . . . . . . . . . . . . . . . 19
4.9 Question 79: Fiscal Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.10 Question 80: Monetary Policy . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.11 Question 81: Phillips Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.12 Question 82: Money Supply Misconception . . . . . . . . . . . . . . . . . 20
4.13 Question 83: Business Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.14 Question 84: Federal Reserve Role . . . . . . . . . . . . . . . . . . . . . . 20
4.15 Question 85: Interest Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.16 Question 86: GDP Components . . . . . . . . . . . . . . . . . . . . . . . . 20
4.17 Question 87: Deflation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.18 Question 88: Multiplier Effect . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.19 Question 89: Economic Indicators . . . . . . . . . . . . . . . . . . . . . . 21
4.20 Question 90: Budget Deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.21 Question 91: National Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . 21


Page 2 of 32

, D089 Principles of Economics OA WGU 2025 July 3, 2025


4.22 Question 92: Aggregate Demand Shift . . . . . . . . . . . . . . . . . . . . 21
4.23 Question 93: Aggregate Supply Shift . . . . . . . . . . . . . . . . . . . . . 22
4.24 Question 94: Stagflation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.25 Question 95: Monetary Policy Tools . . . . . . . . . . . . . . . . . . . . . 22
4.26 Question 96: Expansionary Fiscal Policy . . . . . . . . . . . . . . . . . . . 22
4.27 Question 97: Contractionary Fiscal Policy . . . . . . . . . . . . . . . . . . 22
4.28 Question 98: Consumer Price Index . . . . . . . . . . . . . . . . . . . . . 22
4.29 Question 99: Cyclical Unemployment . . . . . . . . . . . . . . . . . . . . 23
4.30 Question 100: Economic Growth Impact . . . . . . . . . . . . . . . . . . . 23
4.31 Question 101: Hyperinflation . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.32 Question 102: Fiscal Policy Multiplier . . . . . . . . . . . . . . . . . . . . 23
4.33 Question 103: Money Supply Growth . . . . . . . . . . . . . . . . . . . . . 23
4.34 Question 104: Natural Rate of Unemployment . . . . . . . . . . . . . . . 23
4.35 Question 105: Crowding Out . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5 Market Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1 Question 106: Perfect Competition Characteristics . . . . . . . . . . . . 24
5.2 Question 107: Monopoly Definition . . . . . . . . . . . . . . . . . . . . . . 24
5.3 Question 108: Oligopoly Definition . . . . . . . . . . . . . . . . . . . . . . 24
5.4 Question 109: Monopolistic Competition . . . . . . . . . . . . . . . . . . 24
5.5 Question 110: Barriers to Entry . . . . . . . . . . . . . . . . . . . . . . . . 25
5.6 Question 111: Price Discrimination . . . . . . . . . . . . . . . . . . . . . . 25
5.7 Question 112: Market Power . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.8 Question 113: Perfect Competition Efficiency . . . . . . . . . . . . . . . . 25
5.9 Question 114: Monopoly Inefficiency . . . . . . . . . . . . . . . . . . . . . 25
5.10 Question 115: Oligopoly Collusion . . . . . . . . . . . . . . . . . . . . . . 26
5.11 Question 116: Product Differentiation . . . . . . . . . . . . . . . . . . . . 26
5.12 Question 117: Natural Monopoly . . . . . . . . . . . . . . . . . . . . . . . 26
5.13 Question 118: Antitrust Laws . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.14 Question 119: Market Structure Pricing . . . . . . . . . . . . . . . . . . . 26
5.15 Question 120: Profit Maximization . . . . . . . . . . . . . . . . . . . . . . 26
5.16 Question 121: Economies of Scale . . . . . . . . . . . . . . . . . . . . . . . 27
5.17 Question 122: Diseconomies of Scale . . . . . . . . . . . . . . . . . . . . . 27
5.18 Question 123: Monopoly Regulation . . . . . . . . . . . . . . . . . . . . . 27
5.19 Question 124: Oligopoly Interdependence . . . . . . . . . . . . . . . . . 27
5.20 Question 125: Perfect Competition Entry . . . . . . . . . . . . . . . . . . 27
5.21 Question 126: Monopoly Profit . . . . . . . . . . . . . . . . . . . . . . . . 27
5.22 Question 127: Monopolistic Competition Example . . . . . . . . . . . . 28
5.23 Question 128: Collusion Instability . . . . . . . . . . . . . . . . . . . . . . 28
5.24 Question 129: Price Leadership . . . . . . . . . . . . . . . . . . . . . . . . 28
5.25 Question 130: Deadweight Loss . . . . . . . . . . . . . . . . . . . . . . . . 28
5.26 Question 131: Market Structure Innovation . . . . . . . . . . . . . . . . 28
5.27 Question 132: Monopolistic Competition Profit . . . . . . . . . . . . . . 28
5.28 Question 133: Market Power Example . . . . . . . . . . . . . . . . . . . . 29
5.29 Question 134: Game Theory in Oligopolies . . . . . . . . . . . . . . . . . 29
5.30 Question 135: Monopoly Price Setting . . . . . . . . . . . . . . . . . . . . 29

6 Economic Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 Question 136: Fiscal Policy Goal . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2 Question 137: Monetary Policy Goal . . . . . . . . . . . . . . . . . . . . . 29


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