Verified Answer :

A polymer is made of more monomers
Amino acid is a monomer.
When you have more amino acids, it's a polymer (a protein)

So the answer is amino acid
the other 3 are polymers

Answer: Amino acid

Explanation:

Amino acid is a monomer that combines together to form a polymer known as protein. Two or more than two amino acids combine to form a protein.

The amino acids are joined together by peptide bond. Amino acids are the most important and basic components of life that performs the vital functions of the body.

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