Mescaline is not a dissociative drug but a psychedelic alkaloid of
phenethylamine class that has hallucinogenic effects.
Meanwhile, phencyclidine (PCP), ketamine
and dextromethorphan at high doses is classified as dissociative general
anesthetic that distort perceptions of sight and sound and produce feelings of
detachment from the environment and self. Other effects include analgesia, hallucinations,
mania and amnesia.
Dissociative drugs would interfere one's sight, sound and would create feeling of detachment from the environment and from one's self. There are two drugs namely PCP and ketamine and used as general anesthetics during surgery. Dextromethorphan can also produce effects similar to ketamine and PCP thus answer is B. Mescaline.
