Nicotine calms anxiety and diminishes sensitivity to pain by triggering the release of opioids and

A) epinephrine.
B) dopamine.
C) MDMA.
D) THC.

Opioids

A class of drugs derived from the opium poppy or synthesized analogues, used for pain relief, but can be addictive.

Nicotine

A stimulating and highly addictive chemical found in tobacco, which acts on the nervous system to produce feelings of pleasure and arousal.