Biology

The correct answer is A.C, H, O.

Carbohydrates are made up of three elements: carbon (C), hydrogen (H), and oxygen (O). These elements combine in various ratios, but the basic formula for a carbohydrate is often represented as ( CnH{2n}O_n ), where n is the number of carbon atoms in the molecule. Simple carbohydrates (monosaccharides like glucose) are made up of these three elements, and more complex carbohydrates (polysaccharides like starch and cellulose) are made by linking multiple monosaccharide units together.

Breakdow...