Answer:
The correct answer is that "Truman's pledge to support free people who resisted totalitarian takeover signaled an open-ended intento to oppose the Soviets anywhere in the world.
Explanation:
The Truman doctrine was made by president Harry S. Truman and is a foreign policy where the United States pledges to help all nations to avoid a totalitarian goverment. This is something that rised the conflict between the United States and the Soviet Union and starting the Cold War.