Justify Chemical Design Decisions Practice Test

A lab must store 6 M hydrochloric acid (HCl) for student experiments. The storage container must not react with the acid, must not contaminate it, and must remain safe if dropped. The lab chose a HDPE (high-density polyethylene) bottle instead of a glass bottle. Which reasoning best justifies this design decision using chemical properties and safety trade-offs?

A reusable water bottle company chose a BPA-free copolyester plastic instead of polycarbonate after customer concerns about chemical leaching. In an internal test, bottles were filled with water and held at $60^\circ$C for 24 hours. The polycarbonate bottles showed measurable BPA in the water, while the copolyester bottles showed BPA below the detection limit. Which reasoning best justifies the material choice?