Complete the sentence. problem solving requires that individuals

a.) understand information from the environment
b.) avoid stimuli in the environment
c.) suppress unconscious memories
d.) use mnemonic devices to recall information

Hallucinogens

Explanation:

The drugs  used by the human beings that causes hallucinogenic effect on the human nervous system. it can be defined as a substance that can cause perceptual anomalies, emotions, change in thoughts, substantial subjective change.

There are many chemicals available that can cause this effect. Example: LSD (lysergic acid diethylamide), datura, morning glory seeds et cetera.