Question

in which disorder do people alternate between episodes of lethargic hopelessness and wild overexcitement?
a bipolar disorder
b major depressive disorder
c mania
d rumination

Explanation:

Bipolar disorder is characterized by alternating between episodes of depression (lethargic hopelessness) and mania (wild overexcitement). Major depressive disorder mainly involves depression. Mania is just one phase (the overexcited phase) of bipolar disorder. Rumination is a cognitive process (repetitive thinking) often associated with depression but not the disorder of alternating between two extreme states.

Answer:

A. Bipolar disorder