Depression is sometimes referred to as "the common cold of psychological disorders" because

A) it is the most prevalent psychological disorder,affecting millions of people.
B) it is easily transmitted from person to person,like the common cold.
C) there is no effective treatment for it.
D) even if a person gets over it,he or she can expect to get it again.

Psychological Disorders

Mental disorders characterized by patterns of behavior or thought that are significant enough to interfere with one's ability to function in daily life.

Prevalent

refers to something that is common or widespread within a particular area or at a particular time.

Effective Treatment

A therapeutic approach or intervention that has been scientifically proven to improve symptoms or conditions in a meaningful way.