Question

water proteins fats carbohydrates provide(s) the amino acids necessary to build and repair muscle tissue and contribute(s) to the growth of your hair, skin, and nails.

Explanation:

Proteins are made up of amino - acids. They are essential for building and repairing muscle tissue, as well as contributing to the growth of hair, skin, and nails. Water, fats, and carbohydrates do not provide amino - acids for these functions.

Answer:

Proteins