What Is the Evidence Against the Assertion That Marijuana Is

Multiple Choice

What is the evidence against the assertion that marijuana is a "gateway drug"?

A) Almost all youths who use illicit substances have used marijuana.
B) Most who use illicit substances begin using marijuana after their illict substance use has already begun.
C) Most adolescents who use cigarettes, alcohol, and marijuana do not use other illicit substances.
D) There is no relationship between use of marijuana and use of illicit substances.