WGU D440 Nutrition OA Exam Prep Questions and Answers 2… 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
WGU D440 Nutrition OA Exam Prep Questions and
Answers 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,WGU D440 Nutrition OA Exam Prep Questions and Answers 2… 2026 Update • Verified Answers
Questions & Verified Answers
1. Which nutrient is primarily responsible for the repair and growth of body tissues?
A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins
Answer: C
Rationale: Proteins consist of amino acids, which are the building blocks of body tissues and are essential for
growth and repair. This is an important clinical concept because selecting the correct answer (C) requires
understanding both the pathophysiology and the practical nursing implications. Recognizing this principle
allows the nurse to prioritize care, anticipate complications, and provide accurate patient education.
2. Which vitamin requires intrinsic factor for absorption in the small intestine?
A. Vitamin C
B. Vitamin K
C. Vitamin A
D. Vitamin B12
Answer: D
Rationale: Vitamin B12 must bind to intrinsic factor, a glycoprotein produced by the stomach, to be absorbed in
the ileum. Exam questions often test the ability to distinguish this concept from closely related distractors,
making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports safe,
evidence-based practice and improves patient outcomes.
3. The DASH diet is specifically designed to manage which of the following conditions?
A. Type 1 Diabetes
B. Hypertension
C. Celiac Disease
D. Osteoporosis
Answer: B
Rationale: The DASH (Dietary Approaches to Stop Hypertension) diet emphasizes fruits, vegetables, and
low-fat dairy to reduce sodium and lower blood pressure. This is an important clinical concept because
selecting the correct answer (B) requires understanding both the pathophysiology and the practical nursing
implications. Recognizing this principle allows the nurse to prioritize care, anticipate complications, and provide
accurate patient education.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, WGU D440 Nutrition OA Exam Prep Questions and Answers 2… 2026 Update • Verified Answers
4. Which of the following is a symptom of Vitamin A deficiency?
A. Scurvy
B. Pellagra
C. Rickets
D. Night blindness
Answer: D
Rationale: Vitamin A is crucial for vision; its deficiency leads to xerophthalmia, starting with night blindness.
This is an important clinical concept because selecting the correct answer (D) requires understanding both the
pathophysiology and the practical nursing implications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education.
5. What is the primary site for nutrient absorption in the human digestive system?
A. Stomach
B. Small Intestine
C. Large Intestine
D. Esophagus
Answer: B
Rationale: The small intestine, specifically the duodenum, jejunum, and ileum, is where most nutrient
absorption occurs via villi and microvilli. Recognizing this principle allows the nurse to prioritize care, anticipate
complications, and provide accurate patient education. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery.
6. Which of the following fats is considered the most heart-healthy?
A. Saturated fats
B. Trans fats
C. Monounsaturated fats
D. Hydrogenated oils
Answer: C
Rationale: Monounsaturated fats, found in olive oil and avocados, help lower LDL cholesterol levels compared
to saturated and trans fats. Recognizing this principle allows the nurse to prioritize care, anticipate
complications, and provide accurate patient education. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 3
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
WGU D440 Nutrition OA Exam Prep Questions and
Answers 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,WGU D440 Nutrition OA Exam Prep Questions and Answers 2… 2026 Update • Verified Answers
Questions & Verified Answers
1. Which nutrient is primarily responsible for the repair and growth of body tissues?
A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins
Answer: C
Rationale: Proteins consist of amino acids, which are the building blocks of body tissues and are essential for
growth and repair. This is an important clinical concept because selecting the correct answer (C) requires
understanding both the pathophysiology and the practical nursing implications. Recognizing this principle
allows the nurse to prioritize care, anticipate complications, and provide accurate patient education.
2. Which vitamin requires intrinsic factor for absorption in the small intestine?
A. Vitamin C
B. Vitamin K
C. Vitamin A
D. Vitamin B12
Answer: D
Rationale: Vitamin B12 must bind to intrinsic factor, a glycoprotein produced by the stomach, to be absorbed in
the ileum. Exam questions often test the ability to distinguish this concept from closely related distractors,
making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports safe,
evidence-based practice and improves patient outcomes.
3. The DASH diet is specifically designed to manage which of the following conditions?
A. Type 1 Diabetes
B. Hypertension
C. Celiac Disease
D. Osteoporosis
Answer: B
Rationale: The DASH (Dietary Approaches to Stop Hypertension) diet emphasizes fruits, vegetables, and
low-fat dairy to reduce sodium and lower blood pressure. This is an important clinical concept because
selecting the correct answer (B) requires understanding both the pathophysiology and the practical nursing
implications. Recognizing this principle allows the nurse to prioritize care, anticipate complications, and provide
accurate patient education.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, WGU D440 Nutrition OA Exam Prep Questions and Answers 2… 2026 Update • Verified Answers
4. Which of the following is a symptom of Vitamin A deficiency?
A. Scurvy
B. Pellagra
C. Rickets
D. Night blindness
Answer: D
Rationale: Vitamin A is crucial for vision; its deficiency leads to xerophthalmia, starting with night blindness.
This is an important clinical concept because selecting the correct answer (D) requires understanding both the
pathophysiology and the practical nursing implications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education.
5. What is the primary site for nutrient absorption in the human digestive system?
A. Stomach
B. Small Intestine
C. Large Intestine
D. Esophagus
Answer: B
Rationale: The small intestine, specifically the duodenum, jejunum, and ileum, is where most nutrient
absorption occurs via villi and microvilli. Recognizing this principle allows the nurse to prioritize care, anticipate
complications, and provide accurate patient education. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery.
6. Which of the following fats is considered the most heart-healthy?
A. Saturated fats
B. Trans fats
C. Monounsaturated fats
D. Hydrogenated oils
Answer: C
Rationale: Monounsaturated fats, found in olive oil and avocados, help lower LDL cholesterol levels compared
to saturated and trans fats. Recognizing this principle allows the nurse to prioritize care, anticipate
complications, and provide accurate patient education. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 3
