Question

what is an essential nutrient?
a. a nutrient that must be obtained from food
b. a nutrient that contains vitamins and minerals
c. a nutrient that contains carbohydrates, proteins, and fats
d. a nutrient that is made by the body whenever needed

Explanation:

An essential nutrient is defined as a nutrient that the human body cannot synthesize in sufficient amounts (or at all) to meet physiological needs, so it must be acquired through dietary intake. Option b describes micronutrients but not the definition of essential. Option c refers to macronutrients, which include both essential and non-essential forms. Option d is the opposite of an essential nutrient, as those are made by the body.

Answer:

a. a nutrient that must be obtained from food