Based on the Monitoring the Future data, historically, how has general substance use (past month) for 12th graders in the U.S. changed over time?
a. increased from late ‘70s, declined through the ‘90s, and has since increased
b. declined from late ‘70s through the ‘90s, and has since increased
c. increased from late ‘70s, declined through the ‘90s, and has since declined
d. declined from late ‘70s, rose through the ‘90s, and has since declined
Answer: D
Psychology
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