Biology

The correct answer is: B.Monomer

Explanation:

A monomer is a small, basic unit or building block that can join with other monomers to form larger molecules known as polymers.

For example:

1.Amino acids are the monomers that make up proteins (polymers).

2.Nucleotides are the monomers that form nucleic acids like DNA (a polymer).

3.Monosaccharides are the monomers that form polysa...