18-year-old Sam has experimented with drugs throughout high school. He has now begun to use inhalants and take the prescription drug OxyContin. Which statement is most likely to be true?

A) He has a good relationship with his parents.
B) He gets more than 9 hours of sleep a night.
C) He has also used marijuana in the past.
D) He gets good grades in school.

C) He has also used marijuana in the past. Substance use usually starts during adolescence, and it usually begins with legal-for-adults drugs such as alcohol and tobacco. If it progresses, marijuana is typically used next, then other illegal drugs.

Psychology

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The Piagetian sensorimotor stage that involves the infant's responses to objects and people is

stage one. stage two. stage three. stage five.

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