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.

Africa has 54 countries

Fiber doesnt contain any calories i believe