In the United States, manic depression is now called:​

A) ​bipolar disease
B) ​attention deficit disorder
C) ​ethnic psychosis
D) ​deviance

Manic depression is now commonly referred to as bipolar disease or bipolar disorder in the United States. Option B, attention deficit disorder, is a separate disorder that is not related to bipolar disorder. Option C, ethnic psychosis, is not a recognized term in the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders) or other reputable sources in the mental health field. Option D, deviance, is not a term used to diagnose or describe mental health conditions.