Right choice is (c) Polyamide
To explain I would say: Polyamides are strong and abrasive resistant plastics which are used as fasteners, bushings, and electrical parts. Their common trade names are Nylon, Versalon, Ultramid, Zytel, and Plaskon. Acetal’s trade names are Delrin and Celcon, while that of polycarbonate are Lexan and Merlon.