WGU D440 NUTRITION OBJECTIVE ASSESSMENT
LATEST 2026 EXAM PREPARATION | WGU D440 OA
VERIFIED PRACTICE TEST | COMPLETE NUTRITION
STUDY GUIDE WITH VERIFIED 300+ QUESTIONS &
DETAILED RATIONALES | MACRONUTRIENTS,
MICRONUTRIENTS, METABOLISM, DIETARY
GUIDELINES, LIFESPAN NUTRITION & DISEASE
PREVENTION
Question 1:
Which macronutrient is primarily responsible for energy production in the body?
A) Fiber
B) Carbohydrates
C) Protein
D) Fats
CORRECT OPTION: B) Carbohydrates
RATIONALE: Carbohydrates are the body's preferred source of energy, particularly for high-
intensity activity.
Question 2:
Which of the following vitamins is fat-soluble?
A) Vitamin C
B) Vitamin B6
C) Vitamin B12
D) Vitamin A
CORRECT OPTION: D) Vitamin A
RATIONALE: Fat-soluble vitamins, including Vitamins A, D, E, and K, are stored in body fat
and are absorbed along with dietary fat.
Question 3:
What is the primary role of protein in the body?
, A) Growth and repair of tissues
B) Energy production
C) Hormonal regulation
D) Nutrient absorption
CORRECT OPTION: A) Growth and repair of tissues
RATIONALE: Protein is essential for building and repairing tissues, as well as making
enzymes and hormones.
Question 4:
Which dietary guideline is recommended for maintaining heart health?
A) Increase saturated fat intake
B) Limit added sugars
C) Decrease physical activity
D) Increase sodium intake
CORRECT OPTION: B) Limit added sugars
RATIONALE: Reducing added sugars helps lower the risk of heart disease and other health
issues.
Question 5:
Which nutrient is most likely to be deficient in a vegan diet?
A) Vitamin C
B) Vitamin B12
C) Dietary fiber
D) Antioxidants
CORRECT OPTION: B) Vitamin B12
RATIONALE: Vitamin B12 is primarily found in animal products, making it a common
deficiency in vegan diets.
Question 6:
LATEST 2026 EXAM PREPARATION | WGU D440 OA
VERIFIED PRACTICE TEST | COMPLETE NUTRITION
STUDY GUIDE WITH VERIFIED 300+ QUESTIONS &
DETAILED RATIONALES | MACRONUTRIENTS,
MICRONUTRIENTS, METABOLISM, DIETARY
GUIDELINES, LIFESPAN NUTRITION & DISEASE
PREVENTION
Question 1:
Which macronutrient is primarily responsible for energy production in the body?
A) Fiber
B) Carbohydrates
C) Protein
D) Fats
CORRECT OPTION: B) Carbohydrates
RATIONALE: Carbohydrates are the body's preferred source of energy, particularly for high-
intensity activity.
Question 2:
Which of the following vitamins is fat-soluble?
A) Vitamin C
B) Vitamin B6
C) Vitamin B12
D) Vitamin A
CORRECT OPTION: D) Vitamin A
RATIONALE: Fat-soluble vitamins, including Vitamins A, D, E, and K, are stored in body fat
and are absorbed along with dietary fat.
Question 3:
What is the primary role of protein in the body?
, A) Growth and repair of tissues
B) Energy production
C) Hormonal regulation
D) Nutrient absorption
CORRECT OPTION: A) Growth and repair of tissues
RATIONALE: Protein is essential for building and repairing tissues, as well as making
enzymes and hormones.
Question 4:
Which dietary guideline is recommended for maintaining heart health?
A) Increase saturated fat intake
B) Limit added sugars
C) Decrease physical activity
D) Increase sodium intake
CORRECT OPTION: B) Limit added sugars
RATIONALE: Reducing added sugars helps lower the risk of heart disease and other health
issues.
Question 5:
Which nutrient is most likely to be deficient in a vegan diet?
A) Vitamin C
B) Vitamin B12
C) Dietary fiber
D) Antioxidants
CORRECT OPTION: B) Vitamin B12
RATIONALE: Vitamin B12 is primarily found in animal products, making it a common
deficiency in vegan diets.
Question 6:
