which macromolecules are polymers made of nucleotides (A) fatty acids (B) nucleic acids (C) carboxylic acids (D) amino acides

The answer is (B) nucleic acids because Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are polymers of nucleotides. And later on you will learn more in detail about the roles these nucleic acids play in protein synthesis. Nucleotides are made up of three parts: a phosphate, a pentose sugar, and a nitrogenous base.