单选题 Which of the following indications is the primary use for electroconvulsive therapy (ECT) ?
A. Severe agitation.
B. Antisocial behavior.
C. Noncompliance with treatment.
D. Major depression with psychotic features.

【正确答案】 D

【答案解析】ECT is indicated for depression. ECT isn't indicated for severe agitation, antisocial behavior, or treatment noncompliance.