Answer: B
Explanation: he brings lady macbeth into action and hints at ambition in both of them
In an essay it should only be one I'm pretty sure, but in a narrative as many as it takes to explain a lesson learned. If you were writing a book your conclusion would be whatever comes to you and whatever you feel the characters would do/say/feel.
The captain refuses to turn back because he is determined to prove himself by getting more oil first. His internal conflict is that he is prioritizing the oil over his wife's feelings. Mrs. Keeney becomes sad and distant because her husband is more focused on earning the respect of others.