which describes human - made polymers?\n○ synthetic\n○ subunit\n○ natural\n○ macromolecule

Brief Explanations:

Human - made polymers are created through chemical synthesis processes. The term for human - made polymers is synthetic polymers. Subunits are parts of polymers, natural polymers occur in nature without human intervention, and macromolecule is a general term for large molecules which includes both natural and synthetic polymers.

Answer:

synthetic