For the previous six weeks or so, carlton's co-workers have noticed that he has seemed very sad much of the time. he has also stopped going to team lunches and stays in his office on his own far more than usual. however, in the last few days, he has seemed very different. he has been in an excited state much of the time, talking more rapidly than usual, and many of his ideas at team meetings seem unrealistic and overambitious.
which of the following disorders are carlton's symptoms most consistent with?

Maniac-Depressive disorder

Explanation: Carlton's symptoms are most consistent with the Maniac-Depressive disorder in which a person experiments changes in their mood going from states of extreme depression (symptoms of feeling sad, a feeling of time passing slow, not having enough will to get dressed, take a shower or even get out of bed, not wanting to attend to meetings and not being able to enjoy things that they had previously) to states of maniac behavior (manifested by an extreme willpower, not being able to stay still for a long time, speaking fluency accelerated and sometimes unintelligible, absurde and irrealistic thoughts, delusions, etc).

answer; biological;