The answer is neutrality.
D because interest free would be a good thing
In the context of World War II, the 'Big Three' consisted of the leaders of the three most powerful countries on the side of the Allies. They were Winston Churchill, the Prime Minister of Great Britain, Franklin D. Roosevelt, the President of the United States, and Joseph Stalin, the Premier of the Soviet Union.
https://study.com/academy/answer/who-were-the-big-3-in-world-war-ii.html
I believe it's asking you how many votes you need to get the majority. example: in a presidential election, more than 50% is the majority.