Jim Hawkins is the correct answer because he is the main character in the story and the one telling the story. As the narrator, he provides the perspective through which the events of the story are presented to the reader. He recounts his experiences and observations throughout the narrative, making him the most suitable choice for the narrator. Dr. Livesey, Mrs. Hawkins, and The Captain are all important characters in the story, but they do not fulfill the role of the narrator.