Question

the bodys primary source of energy comes from
proteins
carbohydrates
vitamins
fats

Explanation:

In biology (a subfield of Natural Science), the body's primary energy source is carbohydrates. Carbohydrates are broken down into glucose, which cells use for energy. Proteins are for structure/function, vitamins for regulation, and fats are a secondary energy source.

Answer:

B. Carbohydrates