People Who Are Very _____ May Seek Out So Much

Multiple Choice

People who are very _____ may seek out so much environmental stimulation that they get into trouble.People who are very _____ may be so overstimulated by their environments that they feel chronically overwhelmed and uncomfortable.Which brain structure is responsible for consistent differences in understimulation or overstimulation in personality?

A) extraverted; introverted; descending reticular activating system
B) extraverted; introverted; ascending reticular activating system
C) introverted; extraverted; descending reticular activating system
D) introverted; extraverted; ascending reticular activating system