Question

After several weeks of feeling gloomy and being socially withdrawn, marco has suddenly become extremely sociable and talkative. he doesn't seem to need any sleep, and he becomes irritated when his friends tell him to slow down. marco's behavior is most consistent with

Answer 1

The correct answer is bipolar disorder.
This type of a disorder is characterized by rapid change of moods - one day, a person might feel depressed and very sad, and the other, they might be experiencing extremely elevated moods. This is what happened to Marco in the case above - so he might need to start seeing a therapist or taking medicine.