Answer :

A) a polymer. Polymers are large molecules made of small molecules called monomers.

Answer;

-A polymer

Explanation;

A polymer is a large molecule made up of similar or identical subunits called monomers.

For example starch and cellulose are polymers or a macromolecules that are composed of many monosaccharides or simple sugars. Proteins are polmers of amino acids.