D) the differing views on how an animal feels when hunted.
The first is not a disagreement.
The second is not either, Whitney fears ship trap island but he only explains it, he doesn’t argue about it.
The third does not come up in the story. They do not disagree with the route the yacht has picked.
In the story Whitney says that being hunted must not be very pleasurable for the animals. Rainsford says they have no understanding and that no one cares how a Jaguar feels. Rainsford also replies with “Nonsense... the world is made up of two classes, the hunters and the huntees. Luckily, you and I are hunters.”