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

Bisphenol A (BPA) is an industrial chemical crucial in manufacturing polycarbonate, a hard, transparent plastic utilized in numerous consumer products.

It's also present in epoxy resins, serving as a protective layer inside certain metal food and beverage cans.

BPA can seep into food from epoxy resin coatings in canned goods and from items like polycarbonate tableware, food containers, water bottles, and baby bottles. The extent of BPA leaching is more dependent on the liquid's or bottle's temperature than the container's age.

BPA is also detectable in breast milk, raising widespread concern due to the ubiquitous nature of human exposure.

Hence option (b) is the correct answer.