Seeing or hearing things that are not present is called a/an:

A) anxiety reaction.
B) hallucination.
C) obsession.
D) manic episode.

Hallucination

A sensory experience of something that does not exist outside the mind, often seen, heard, or felt.

Anxiety Reaction

An emotional and physiological response to stress characterized by feelings of tension, worried thoughts, and physical changes like increased blood pressure.

Obsession

An intrusive and persistent thought, urge, or image that repeatedly enters the mind, often causing distress.