Which of the following is an example of an anxiolytic drug?

Lorazepam is classified as an anxiolytic drug because it belongs to a group of medications known as benzodiazepines, which are primarily used to treat anxiety disorders. Anxiolytics work by enhancing the effects of a neurotransmitter in the brain called gamma-aminobutyric acid (GABA), leading to a calming effect on the nervous system. This makes lorazepam effective in managing symptoms of anxiety, panic disorders, and insomnia, among other conditions.

Other options do not have the same anxiolytic properties. Adderall is a stimulant medication used primarily to treat attention-deficit hyperactivity disorder (ADHD), which can actually increase anxiety rather than alleviate it. Quaalude, while it has sedative effects, was historically used for its sedative-hypnotic properties and is no longer legally available for medical use in many places. Caffeine is a central nervous system stimulant that can increase alertness and anxiety, rather than reduce it. Thus, lorazepam stands out as the only option specifically designed to relieve anxiety.