Avery has been snorting cocaine for over a year. In his attempts to achieve a high that is as euphoric as his first (which he will never be able to do), he now needs increasingly greater amounts of the drug. This demonstrates ____.
A) physical dependence
B) withdrawal
C) tolerance
D) addiction

Question

Quizplus · Accepted Answer

Tolerance is demonstrated by needing increasingly greater amounts of a substance to achieve the same effect, which is what Avery is experiencing with cocaine.

Avery Has Been Snorting Cocaine for Over a Year