Studies of marijuana's effects indicate that
A) regular users may achieve a high with less of the drug than occasional users.
B) usage has no negative effects on motor coordination or perceptual skills.
C) usage consistently reduces feelings of anxiety and depression.
D) marijuana is the most commonly used psychoactive drug in North America.

Question

Quizplus · Accepted Answer

Regular users of marijuana may develop a tolerance, meaning they can achieve the desired effects with less of the drug compared to occasional users.

Studies of Marijuana's Effects Indicate That