The correct answer to this open question is the following.
Although the question does not include the diagram or any options, we can say that dropping the bomb would convince the Soviets of US military superiority. That would intimidate Soviets at the start of the Cold War.
The Cold War was a period of so many conflicts and tensions between the United States and the Soviet Union at the end of World War II. Both countries were competing in the arms race and later in the space race. In those tense years, the Soviet Union tried to spread Communism in different regions of the world and the United States tried the foreign policy of containment to stop it.
