Which statement best defines toxicity?

Which statement best defines toxicity?

• A. The study of poisons.
• B. The dosage of a toxic substance.
• C. The chronic exposure effects.
• D. The effects of toxicants, including acute toxicity.

Answer: (D)

Toxicity is the adverse effects produced by a toxicant in a living organism, encompassing how harm can arise from exposure and that harm can occur acutely or with longer-term, chronic exposure. The best choice describes the effects of toxicants, including acute toxicity, which captures the full range of harmful outcomes rather than focusing on a single aspect. The other statements are narrower: one refers to the field that studies poisons, another to the dose itself, and another to chronic effects only. Hence, describing the effects of toxicants—including acute toxicity—best defines toxicity.

Toxicity is the adverse effects produced by a toxicant in a living organism, encompassing how harm can arise from exposure and that harm can occur acutely or with longer-term, chronic exposure. The best choice describes the effects of toxicants, including acute toxicity, which captures the full range of harmful outcomes rather than focusing on a single aspect. The other statements are narrower: one refers to the field that studies poisons, another to the dose itself, and another to chronic effects only. Hence, describing the effects of toxicants—including acute toxicity—best defines toxicity.