During the cold war, how were the policy of containment and the domino theory related?
the policy of containment the ussr establish a number of buffer zones, or “dominoes.”
the us believed that the policy of containment would make it easier for countries to fall to communism like dominoes.
the policy of containment and the domino theory had no direct connection to one another.
the us worried that if communism could not be contained, then countries would fall to it one by one, like dominoes.

The correct answer is:

The US worried that if communism could not be contained, then countries would fall to it one by one, like dominoes.

Explanation:

After World War II, the Soviet Union was an advocate for Communism, and Western countries were advocates for Capitalism, this was one of the main reasons the Cold War begun.

During the Cold War, U.S. President Harry S. Truman wanted to contain communism from spreading in Asia, Africa and Europe so he created the Truman Doctrine. Afterwards, President Eisenhower talked about the Domino Theory, which stated that if one country fell to communism, the neighbor countries would fall to communism sooner or later, like dominoes; so communism had to be contained to prevent the spread of it through the world.

d) all choices are correct

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explanation: