Final answer:
False. Marijuana is not the most commonly abused substance, although it is widely used and has a significant impact on drug abuse violations.
Step-by-step explanation:
False
Marijuana is not the most commonly abused substance. While it is widely used and has been a subject of debate regarding its legalization, there are other substances that are more commonly abused, such as alcohol and nicotine. However, marijuana-related offenses do make up a significant portion of drug abuse violations.