At a New Year's celebration, the first firecracker to explode causes everybody to startle and turn toward the location of the explosion. Later on, after many such explosions, no one seems to react when a firecracker explodes

__________ is marked by excessive euphoria, inflated self-esteem, wild optimism, and hyperactivity

a) Schizophrenia b) Panic disorder c) Generalized anxiety disorder d) A manic episode

In the opening clinical case, Mary M. reported feeling a lack of energy, difficulty sleeping, loss of appetite, difficulty concentrating, and a loss of interest in activities she previously enjoyed

Based on this information, which of the following is the most likely diagnosis for Mary M.? a) Eating disorder b) Major depressive disorder c) Bipolar disorder d) Generalized anxiety disorder