Which of the following is a type of cannabinoid?

Cannabinoids are a class of compounds that interact with the cannabinoid receptors in the brain and body. THC, or tetrahydrocannabinol, is the primary psychoactive component found in cannabis. It is responsible for the "high" associated with marijuana use and has various effects including altering mood, perception, and cognitive function. THC binds to the cannabinoid receptors, producing its effects, which is what makes it a true cannabinoid.

In contrast, cocaine is a stimulant derived from the coca plant that acts primarily as a dopamine reuptake inhibitor. Psychedelics, such as LSD or psilocybin, alter perception and cognitive processes through different mechanisms, often targeting serotonin receptors. Barbiturates are a class of drugs that act as central nervous system depressants, primarily used to treat anxiety and insomnia. None of these substances operate on the same receptors or produce effects in the same way as cannabinoids like THC.