When a person has bizarre thoughts that have no basis in reality the thought process is called:

A) a delusion.
B) anxiety.
C) depression.
D) amnesia.

Delusion

A firmly held belief that contradicts reality, often a symptom of psychiatric disorders.

Anxiety

A feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome.

Depression

An emotional well-being issue defined by consistently low spirits or a disinterest in usual activities, which seriously affects daily living.