WGU D440 Nutrition Practice Exam 2026 UPDATE 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
WGU D440 Nutrition Practice Exam 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 Practice Exam 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Which of the following macronutrients is the body’s primary source of immediate energy?
A. Carbohydrates
B. Proteins
C. Lipids
D. Vitamins
Answer: A
Rationale: Carbohydrates are the body’s preferred and most efficient source of energy, especially for the brain
and nervous system. 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.
2. What is the Recommended Dietary Allowance (RDA) for protein for a healthy adult?
A. for protein for a healthy adult?
B. 1.2 grams per kilogram of body weight
C. 0.8 grams per kilogram of body weight
D. 2.0 grams per kilogram of body weight
Answer: C
Rationale: The RDA for protein for a sedentary adult is 0.8 grams per kilogram of body weight to maintain
nitrogen balance. 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. Which vitamin is fat-soluble and plays a critical role in calcium absorption?
A. Vitamin C
B. Vitamin D
C. Vitamin B12
D. Vitamin K
Answer: B
Rationale: Vitamin D acts as a hormone to increase the absorption of calcium from the intestines. 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.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, WGU D440 Nutrition Practice Exam 2026 UPDATE 2026 Update • Verified Answers
4. A patient is diagnosed with scurvy. Which nutrient deficiency is likely responsible?
A. Vitamin A
B. Thiamin
C. Iron
D. Vitamin C
Answer: D
Rationale: Scurvy is caused by a severe deficiency of Vitamin C, which is necessary for collagen synthesis.
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.
5. Which lipoprotein is commonly referred to as ‘good cholesterol’ because it removes excess
cholesterol from the blood?
A. LDL
B. HDL
C. Chylomicrons
D. VLDL
Answer: B
Rationale: HDL (High-Density Lipoprotein) transports cholesterol away from body tissues and back to the liver
for excretion. 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.
6. Which mineral is essential for the synthesis of thyroid hormones?
A. Zinc
B. Copper
C. Magnesium
D. Iodine
Answer: D
Rationale: Iodine is a key component of thyroid hormones T3 and T4, which regulate metabolism. 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.
Exam (Elaborations) • Actual Questions & Rationales Page 3
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
WGU D440 Nutrition Practice Exam 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 Practice Exam 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Which of the following macronutrients is the body’s primary source of immediate energy?
A. Carbohydrates
B. Proteins
C. Lipids
D. Vitamins
Answer: A
Rationale: Carbohydrates are the body’s preferred and most efficient source of energy, especially for the brain
and nervous system. 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.
2. What is the Recommended Dietary Allowance (RDA) for protein for a healthy adult?
A. for protein for a healthy adult?
B. 1.2 grams per kilogram of body weight
C. 0.8 grams per kilogram of body weight
D. 2.0 grams per kilogram of body weight
Answer: C
Rationale: The RDA for protein for a sedentary adult is 0.8 grams per kilogram of body weight to maintain
nitrogen balance. 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. Which vitamin is fat-soluble and plays a critical role in calcium absorption?
A. Vitamin C
B. Vitamin D
C. Vitamin B12
D. Vitamin K
Answer: B
Rationale: Vitamin D acts as a hormone to increase the absorption of calcium from the intestines. 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.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, WGU D440 Nutrition Practice Exam 2026 UPDATE 2026 Update • Verified Answers
4. A patient is diagnosed with scurvy. Which nutrient deficiency is likely responsible?
A. Vitamin A
B. Thiamin
C. Iron
D. Vitamin C
Answer: D
Rationale: Scurvy is caused by a severe deficiency of Vitamin C, which is necessary for collagen synthesis.
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.
5. Which lipoprotein is commonly referred to as ‘good cholesterol’ because it removes excess
cholesterol from the blood?
A. LDL
B. HDL
C. Chylomicrons
D. VLDL
Answer: B
Rationale: HDL (High-Density Lipoprotein) transports cholesterol away from body tissues and back to the liver
for excretion. 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.
6. Which mineral is essential for the synthesis of thyroid hormones?
A. Zinc
B. Copper
C. Magnesium
D. Iodine
Answer: D
Rationale: Iodine is a key component of thyroid hormones T3 and T4, which regulate metabolism. 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.
Exam (Elaborations) • Actual Questions & Rationales Page 3
