Answer:
Option A, "President Reagan wanted to ensure peace by having a strong military that would be ready to step in and aid anti-communist movements around the world," best describes President Reagan's "peace through strength" policy.
Reagan believed that the best way to achieve peace was to project strength and deter potential adversaries from taking aggressive actions. He advocated for a strong military and increased defense spending, with the goal of being able to respond to any potential threat around the world. This included supporting anti-communist movements in countries such as Nicaragua, El Salvador, and Afghanistan.
Reagan's policy was based on the belief that a strong military would discourage aggression and lead to greater stability and security, both for the United States and for its allies. He believed that by projecting strength, the United States could force the Soviet Union to negotiate from a position of weakness and eventually bring an end to the Cold War.
While Reagan's policy was criticized by some for its emphasis on military spending and its support for anti-communist movements, it is generally seen as having played a significant role in the eventual collapse of the Soviet Union and the end of the Cold War.