The correct answer is D. Cold War.
Step-by-step explanation
In the image, you can see a bear representing the Soviet Union or Russia crushed by a rock that has the word "capitalism" inscribed. This image refers to the Cold War, the confrontation that pitted the Soviet Union under the socialist government against the United States under the capitalist government. During this period these two powers did not face each other in a warlike way, but they did participate in a world divided into two blocks and a scientific race to reach the moon. Also illustrated in the image are other rocks with words like "Truman Doctrine" and "Marshall Plan" that were the US plans to weaken socialism globally and capitalism was the "rock" that ultimately defeated that bear (Russia or the Soviet Union) ending the Cold War. So the correct answer is D. Cold War.