Which is the best description of a toxic reaction to a drug?.

Choice A rationale: A toxic reaction to a drug is best described as a deleterious adverse effect. It is capable of causing injury or death. Choice B rationale: An individual’s unexpected effect refers to idiosyncratic reactions, which are unpredictable and vary from person to person. Choice C rationale: Physiologic dependence refers to the body’s adaptation to a drug, requiring more of it to achieve a certain effect. It’s not a toxic reaction. Choice D rationale: Psychological craving is associated with addiction, not a toxic reaction to a drug.