There was a naval blockade around Cuba because the Soviet ships turned back on their way to Cuba. Option A is correct.
What is the significance of Cuban missile crisis?
The Cuban missile crisis pronounced the celestial point of a tense period in US-Soviet dealings.
It was important in Nikita Khrushchev's ending and the Soviet Union's discovery to accomplish nuclear parity with the United States. Because the Soviet ships turned back on their way to Cuba, there was a naval blockade around the island.
Therefore, option A is correct.
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