Answer:
OC. The captain.
Explanation:
Daniel Defoe's adventure novel "Robinson Crusoe" revolves around the story of the adventures of Robinson Crusoe, who wandered and got caught in a sea storm that led to him stranded on an island. But in trying to escape society, and defying his parents, Crusoe only ended being isolated, away from not only the very society he despises but from all forms of human interaction.
The given excerpt is taken from towards the end of the story when Robinson, along with the captain of the ship who had been overthrown by a mutiny of his own men, successfully recaptured their lost ship. Their successful execution of the plan to attack the mutineers and regain control of the ship helped not only the captain but everyone loyal to him, including Robinson, to get a chance to get back home to 'civilization'.
Robinson's words "I told him I looked upon him as a man sent from Heaven to deliver me" are a description of the captain to whom he feels grateful. Thus, the correct answer is option C.