Answer:A. Call Phil in for a private meeting to appreciate his work.
Explanation: An introvert is a person known to be quiet,calm and always want to keep to his or her Self, an introvert likes to spend sometime alone in order to renew his or her strength.
An introvert does not like to seek the attention of others, he or she does not like special recognition or praises.
THE BEST WAY TO APPRECIATE the WORK OF PHIL IS TO CALL PHIL IN FOR A PRIVATE MEETING TO APPRECIATE HIS WORKS.