Which is a primary source of carbohydrates?

Fruits and vegetables are considered a primary source of carbohydrates because they are rich in natural sugars, starches, and dietary fiber that constitute essential parts of a balanced diet. Carbohydrates are the body's main source of energy, and fruits and vegetables provide various forms of carbohydrates primarily in the form of simple sugars like fructose and glucose as well as complex carbohydrates.

These food groups also offer additional health benefits, being high in vitamins, minerals, and antioxidants, which contribute to overall health. In contrast, proteins, fats, and oils do not primarily provide carbohydrates; rather, they are sources of amino acids and fatty acids. Minerals and vitamins serve essential roles in bodily functions but are not sources of carbohydrates at all. Thus, fruits and vegetables stand out as the correct answer, as they directly supply the necessary carbohydrates the body needs for energy and nutritional balance.