Which one involves both mania and depression ?

Bipolar I

The correct answer is option 3: Bipolar I

Bipolar mood disorders were earlier referred to as manic-depressive disorders. Some examples of types of bipolar and related disorders include Bipolar I Disorder, Bipolar II disorder and Cyclothymic Disorder.

Bipolar I disorder involves both mania and depression, which are alternately present and sometimes interrupted by periods of normal mood. Manic episodes rarely appear by themselves; they usually alternate with depression.