The correct option is A Hallucinogenic drugs
Psilocybin is naturally occurring psychedelic compound, which has mind-altering effects like visual and mental hallucinations.
Mescalin is a naturally occurring psychedelic alkaloid of the phenethylamine class, known for its hallucinogenic effects.
LSD or lysergic acid diethylamine is a psychedelic drug of the ergoline family, which is known very well for its hallucinogenic effect.
Thus, the correct answer is option (A), 'Hallucinogenic drug'.