Research on the use of addictive drugs indicates that
A) less than one-third of Americans who have ever smoked cigarettes have ever quit.
B) regular marijuana smokers typically need to take progressively larger doses to feel the same effect.
C) many people do voluntarily stop using addictive drugs without any treatment.
D) the majority of people who try cocaine become addicted within 10 years of first use.

Question

Quizplus · Accepted Answer

Research has shown that many people are able to voluntarily stop using addictive drugs without any formal treatment. While quitting nicotine can be difficult and less than one-third of Americans who have ever smoked cigarettes have quit, regular marijuana smokers do not typically need to take progressively larger doses and only a minority of people who try cocaine actually become addicted.

Research on the Use of Addictive Drugs Indicates That