The principal chemical that causes the psychoactive effect of marijuana is:

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Multiple Choice

The principal chemical that causes the psychoactive effect of marijuana is:

Explanation:
THC, short for delta-9-tetrahydrocannabinol, is the main psychoactive component in marijuana. It works by binding to cannabinoid receptors in the brain, especially CB1 receptors, which changes how neurons communicate and leads to effects like euphoria, altered perception, and impaired coordination. Cannabis contains many cannabinoids, but THC drives the characteristic psychoactive experience. The other substances listed act through different mechanisms—LSD mainly targets serotonin receptors, MDMA increases serotonin and other monoamines, and PCP blocks NMDA receptors—so they are not the primary active component of marijuana.

THC, short for delta-9-tetrahydrocannabinol, is the main psychoactive component in marijuana. It works by binding to cannabinoid receptors in the brain, especially CB1 receptors, which changes how neurons communicate and leads to effects like euphoria, altered perception, and impaired coordination. Cannabis contains many cannabinoids, but THC drives the characteristic psychoactive experience. The other substances listed act through different mechanisms—LSD mainly targets serotonin receptors, MDMA increases serotonin and other monoamines, and PCP blocks NMDA receptors—so they are not the primary active component of marijuana.

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