Over the Course of Several Months and for No Apparent

Multiple Choice

Over the course of several months and for no apparent reason, Jennifer became progressively more despondent, withdrawn, and listless. Her doctor accurately diagnosed the problem as major depressive disorder and started Jennifer on an antidepressant drug called Prozac. Three weeks later, Jennifer was much improved. Like some other antidepressant drugs, Prozac works by _____ the availability of _____ in the brain.

A) increasing; serotonin
B) decreasing; dopamine
C) increasing; endorphins
D) decreasing; acetylcholine