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 of the following is considered a macronutrient?
A) Vitamin A
B) Iron
C) Carbohydrates
D) Calcium
CORRECT OPTION: C) Carbohydrates
RATIONALE: Carbohydrates are classified as macronutrients because they provide energy
and are required in larger amounts compared to micronutrients like vitamins and minerals.
Question 2:
What is the primary function of dietary fats?
A) Provide immediate energy
B) Support cell growth
C) Regulate metabolism
D) Aid in digestion
CORRECT OPTION: B) Support cell growth
RATIONALE: Dietary fats are essential for supporting cell growth and play critical roles in
hormone production, nutrient absorption, and providing energy reserves.
Question 3:
, Which of the following dietary guidelines is recommended for disease prevention?
A) Limit intake of fruits and vegetables
B) Choose whole grains over refined grains
C) Increase consumption of saturated fats
D) Avoid all dietary fats
CORRECT OPTION: B) Choose whole grains over refined grains
RATIONALE: Choosing whole grains over refined grains is recommended as part of a
balanced diet to enhance nutrient intake and reduce the risk of chronic diseases.
Question 4:
During which stage of life is increased protein intake particularly important?
A) Infancy
B) Adulthood
C) Elderly
D) Middle age
CORRECT OPTION: A) Infancy
RATIONALE: Infancy is a critical growth period where increased protein intake is essential
for development and growth, as infants require adequate nutrients to support rapid growth and
brain development.
Question 5:
What is the role of antioxidants in the diet?
A) Provide energy
B) Promote muscle growth
C) Protect cells from oxidative stress
D) Aid in the absorption of calcium
CORRECT OPTION: C) Protect cells from oxidative stress
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 of the following is considered a macronutrient?
A) Vitamin A
B) Iron
C) Carbohydrates
D) Calcium
CORRECT OPTION: C) Carbohydrates
RATIONALE: Carbohydrates are classified as macronutrients because they provide energy
and are required in larger amounts compared to micronutrients like vitamins and minerals.
Question 2:
What is the primary function of dietary fats?
A) Provide immediate energy
B) Support cell growth
C) Regulate metabolism
D) Aid in digestion
CORRECT OPTION: B) Support cell growth
RATIONALE: Dietary fats are essential for supporting cell growth and play critical roles in
hormone production, nutrient absorption, and providing energy reserves.
Question 3:
, Which of the following dietary guidelines is recommended for disease prevention?
A) Limit intake of fruits and vegetables
B) Choose whole grains over refined grains
C) Increase consumption of saturated fats
D) Avoid all dietary fats
CORRECT OPTION: B) Choose whole grains over refined grains
RATIONALE: Choosing whole grains over refined grains is recommended as part of a
balanced diet to enhance nutrient intake and reduce the risk of chronic diseases.
Question 4:
During which stage of life is increased protein intake particularly important?
A) Infancy
B) Adulthood
C) Elderly
D) Middle age
CORRECT OPTION: A) Infancy
RATIONALE: Infancy is a critical growth period where increased protein intake is essential
for development and growth, as infants require adequate nutrients to support rapid growth and
brain development.
Question 5:
What is the role of antioxidants in the diet?
A) Provide energy
B) Promote muscle growth
C) Protect cells from oxidative stress
D) Aid in the absorption of calcium
CORRECT OPTION: C) Protect cells from oxidative stress
