Question

select the correct answer.
which statement best defines micronutrients?
a. micronutrients can be synthesized only by microbial organisms.
b. micronutrients are required by the body in small quantities.
c. micronutrients are essential only for infants and children.
d. micronutrients are naturally made by the body.

Explanation:

• Option A: Micronutrients like vitamins and minerals are not only synthesized by microbial organisms (e.g., some vitamins can be obtained from food, not just microbes), so A is incorrect.
• Option B: Micronutrients (vitamins, minerals) are needed by the body in small amounts, which matches the definition.
• Option C: Micronutrients are essential for all age groups, not just infants/children, so C is wrong.
• Option D: Most micronutrients are not made by the body (e.g., vitamin C in humans; we need to get it from diet), so D is incorrect.

Answer:

B. Micronutrients are required by the body in small quantities.