Answer: The popular students in Mr. Henderson's class can be classified as EXTRAVERTED.
Explanation: Extraverted is an alternative form of saying Extroverted. This mean that an individual is said to be Extraverted when one they are outgoing (talkative, friendly, and social, especially with respect to meeting new people easily and comfortably) sociable, and concerned with outer affairs.
From this definition, it can be deduced that those students are Extraverted. The Question says "enjoy being around others and are friendly and lively" which is a quality of an extravert.
