Question

3 tries left
which drug, depending on the dosage, can be a hallucinogen, stimulant, depressant, or painkiller?
pcp
marijuana
opium
caffeine

Explanation:

PCP (phencyclidine) can act as a hallucinogen, stimulant, depressant, or pain - killer depending on dosage. Marijuana is mainly known as a mild hallucinogen and relaxant. Opium is mainly a pain - killer and depressant. Caffeine is mainly a stimulant.

Answer:

A. PCP