Final answer:
Marijuana is the most likely illicit drug to be used by the general population, with widespread recreational and medical use leading to high numbers of related offenses, despite varying legal statuses.
Step-by-step explanation:
Among the illicit drugs listed, marijuana (cannabis) is the most likely to be used by the general population. Despite its varied legal status in different jurisdictions, marijuana is widely used both medically and recreationally. The Federal Bureau of Investigation (FBI) has reported that marijuana-related offenses are the most numerous drug-related crimes, despite a decrease in arrests for marijuana production as legalization progresses.
Other substances such as MDMA (Ecstasy), cocaine, and LSD are also used recreationally but do not have the same widespread use as marijuana. MDMA is a mild stimulant with perception-altering effects, commonly associated with feelings of increased energy and emotional warmth. Cocaine is a potent stimulant associated with euphoric highs and compulsive use, while LSD is a potent hallucinogen known for altering mood and perception.