The option that would most likely qualify as an organic macromolecule and polymer is:
c. nucleic acids
Nucleic acids, such as DNA and RNA, are large biomolecules (macromolecules) composed of long chains of nucleotides, which makes them polymers. Monosaccharides can form polysaccharides (which are also polymers), but they are not polymers themselves. Amino acids are the building blocks of proteins, which are also polymers but are not themselves macromolecules. Water is not an organic macromolecule or polymer.