In the context of drug use, which of the following statements is true of gateway substances?
A. Their use is the cause of later illicit drug use among young people and school students.
B. The order of use of gateway substances determines the rate of deterioration of dopamine neurons in the mesolimbic pathway in the brain.
C. Their use is an early indicator of the basic pattern of deviant behavior resulting from a variety of psychosocial risk factors.
D. Most people who use gateway substances go on to become cocaine users.
Answer: C
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