Carbohydrates exist as either individual units called monomers or , long chains of monomers bonded together.

Polymers.

Explanation:

Carbohydrates are known as the important part of human diet, and they present in fruits, grains, and vegetables. Through the glucose known as simple sugar a component of starch it provides energy to the body.

The small sub units of glucose which connects together, and form a molecule is known as monomers (single unit), and a group of monomers joints together and form large molecules are known as polymers (many units).

answer; i believe the correct answer is ( proteins );