According to the National Survey on Drug Use and Health, which three illicit drugs are the most commonly abused?

The correct option identifies marijuana, cocaine, and hallucinogens as the most commonly abused illicit drugs based on trends observed in the National Survey on Drug Use and Health. Marijuana consistently ranks as the most widely used illegal substance, largely due to its increasing legalization and cultural acceptance. Cocaine, including its various forms such as crack cocaine, remains popular despite its potential for addiction and a range of negative health outcomes.

Hallucinogens, while less commonly used than marijuana and cocaine, still maintain a notable presence in abuse statistics. These substances include drugs such as LSD and psilocybin, which have experienced a resurgence in interest and use in recent years, particularly among younger populations.

The other options include substances that, while they may be significant in terms of public health concerns, do not align with the current data regarding the most commonly abused illicit drugs. Opioids, for example, are indeed a major issue, but they are more often categorized under prescription drug abuse than as illicit drugs. Alcohol and tobacco, while frequently abused, are legal substances and therefore do not fit into the category of "illicit drugs."