Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

1. A

   Low-density polyethylene

   LDPE. Bags and film; not BPA.

2. B

   Polycarbonate

   Polycarbonate. BPA is the monomer for many PC bottles and linings.

3. C

   Polyethylene terephthalate

   PET. Soft-drink bottles; different chemistry.

4. D

   Polyvinyl chloride

   PVC. Vinyl chloride, not BPA.

Summary. Official key is (b) polycarbonate. Bisphenol A is the building block of polycarbonate plastics and of some epoxy can linings — the health scare of the 2010s.