Biology

The correct answer is: A.Carbohydrates and monosaccharides.

Here’s an explanation of each pair:

A.Carbohydrates and monosaccharides: This is correct. Carbohydrates are polymers made up of monosaccharides (simple sugars) as their monomers. For example, starch and cellulose are carbohydrates made from glucose molecules, which are monosaccharides.

B.DNA and amino acids: This is incorrect. DNA is a polymer made up of nucleotides, not amino acids. Amino acids are the monomers of proteins, not nucleic acids.