we measure toxicity by the dose at which adverse effects are produced. which of the following statements about the dose of and response to toxic agents are true?
a. The dose of toxic agents is directly proportional to the severity of adverse effects.
b. Different toxic agents can have different dose-response relationships.
c. Some individuals may be more sensitive to lower doses of toxic agents than others.
d. The response to toxic agents is always immediate and consistent across all individuals.