Which need for food is based on the body’s need for nutrients?
a) basal metabolic rate (bmr)
b) appetite
c) hunger
d) nutrition

The need for food based on the body's need for nutrients, which is simply psychological desire to eat is called appetite. During this period the body will develop desire or liking for something, to some they'll feel hungry though they aren't necessarily starving but just the normal body adjustments. This effect may also trigger rumbling of the stomach. In other cases the saliva glands are triggered to produce to much saliva in the mouth, which leads to salivation.

D) better spellers i would think

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!