what is the most commonly used illicit substance.
Chapter 11 â Drugs: Use, Abuse, and Control Multiple Choice Questions 1. What is the most commonly used illicit drug among persons aged 12 and older? A. cocaine B. marijuana C. heroin D. methamphetamine E. alcohol Answer: B Page(s): 220 Objective(s): 1 2. The highest rates of illicit drug use occur among adults aged __________________. A. 16-18 B. 18-20 C. 20-22 D. 20-24 Answer: B Page(s): 221 Objective(s): 1 3. The most common form of drug use among teens aged 12-13 is ___________________.