Identify a copolymer from following

Step-by-step solution

Copolymers are polymers constructed from two or more distinct monomer units, while homopolymers consist of a single repeating monomer. Analyzing each polymer: Buna-S is synthesized from 1,3-butadiene and styrene, making it a copolymer. Polyacrylonitrile is derived solely from acrylonitrile, classifying it as a homopolymer. Polypropene results from polymerization of propene, also a homopolymer. Nylon 6,6 is formed through condensation of hexamethylenediamine and adipic acid, qualifying as a copolymer. Thus, Buna-S a