Poly(lactic acid) is a bioderived.....Question 3Answera.polyurethaneb.polyvinylicc.polyesterd.polyether

Poly(lactic acid) is a bioderived polymer that is primarily categorized under c. polyester. It is produced through the polymerization of lactic acid, which is derived from renewable resources like corn starch or sugarcane. The repeating units in poly(lactic acid) are linked by ester bonds, characteristic of polyesters. This makes PLA a versatile material used in various applications, including biodegradable plastics and medical implants. In contrast, polyurethanes, polyvinylics, and polyethers are derived from different processes and have distinct chemical structures and properties, thereby confirming that the correct answer is indeed c. polyester.