Question

select the correct answer.
carbohydrates give us energy. how does protein benefit us?
a. it helps build muscles.
b. it burns energy.
c. it provides energy.
d. it hydrates muscles.

Explanation:

Proteins are essential macromolecules. They are the building blocks of muscles. While carbohydrates are the body's primary energy - providing source (so option C is incorrect as that's mainly carbohydrates' role), and burning energy is more related to metabolic processes in general (not specifically protein's main role, so B is wrong). Hydrating muscles is mainly the role of water (so D is incorrect).

Answer:

A. It helps build muscles.