Answer:
C. General
Step-by-step explanation:
In chapters 19-21 of Treasure Island, Dr. Livesey played the role of a General. He was put in charge of organizing and leading the defense of the stockade against the pirate attack, due to his experience as a military officer. Livesey was responsible for the safety of the group of men at the stockade and was instrumental in their successful defense against the attacking pirates.