'Triclosan', considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

(a) Food preservatives — Triclosan is not used as a food preservative. It is primarily an antimicrobial chemical used in certain consumer hygiene products. Verdict: Incorrect.

(b) Fruit-ripening substances — Fruit ripening is commonly linked with ethylene or calcium carbide misuse, not triclosan. Verdict: Incorrect.

(c) Reused plastic containers — Concerns here are usually about BPA, phthalates, or chemical leaching, not triclosan as the typical contaminant. Verdict: Incorrect.

(d) Toiletries — Triclosan has been used in antibacterial soaps, toothpaste, deodorants, and similar personal care products. Long-term high exposure is considered harmful. Verdict: Correct.