Which of the Following Is an Important Consideration in Distinguishing

Which of the following is an important consideration in distinguishing clinical depression from normal sadness?

A) In clinical depression the mood change always occurs in the absence of any precipitating event.
B) A clinically depressed mood is often accompanied by an enhanced ability to function in usual social situations.
C) Engaging in pleasant activities may temporarily lift a clinically depressed mood.
D) A clinical mood change is usually accompanied by a cluster of additional signs and symptoms.