Answer:
A. Neutrality.
Step-by-step explanation:
When the Second World War started in 1939, the United States stayed neutral. There were even legal restrictions to the sales of weapons and ammunitions to foreign countries, though it changed later. President F.D. Roosevelt knew that sooner or later, the US would have to enter the war, but a good part of the public was in the traditional isolationist mood. Nevertheless, American sympathies for Britain were never hidden.