Which of the following is not a mood disorder?

A) Depression
B) Apathy
C) Euphoria
D) Insomnia

Mood Disorder

A psychological disorder characterized by the elevation or lowering of a person's mood, such as bipolar disorder or depression.

Apathy

A state of indifference, where an individual shows little or no emotion, interest, or concern towards emotional, social, or physical life.

Euphoria

A feeling of intense happiness and excitement, often more than what is considered normal under the circumstances.