The various types of depression have different causes as well as different levels of severity. which of the following best describes clinical depression?
a feeling of overwhelming sadness that usually follows a traumatic event
a medical condition that may occur due to a chemical imbalance in the brain
alternate feelings of extreme happiness and extreme sadness

The correct answer is : a medical condition that may occur due to a chemical imbalance int he brain.

Clinical depression refers to a more severe form of depression. It is also called major depressive disorder. It is a mental disorder that is characterized by having a feeling of sadness, anger, frustration, that could get away with life. It is NOT the same as experiencing a loss of a someone or the like.  

Hi,
The various types of depression have different causes as well as different levels of severity. Which of the following best describes clinical depression?

a medical condition that may occur due to a chemical imbalance in the brain

35 cubic feet of dirt if it's digging a burrow