Answer:
The answer is D, because the priority was to defeat Hitler. And even with the attack of Pearl Harbor, this priority didn't change.
Explanation:
The attack of Pearl Harbor led the Americans to the war. They fought on two fronts (Europe, and the Pacific). But, it was clear to Roosevelt that:
- Hitler was a bad thing and should be defeated. So, the Americans would help to win the war. They will help.
- The war against the Japanese was personal. Of course, defeating the Japanese would lead to a victory one way or another (don't forget that Japan was a German ally), but for the Americans, it was personal.