The correct answer is letter D
The Missile Crisis, which occurred in October 1962, was a diplomatic incident between the United States and the Soviet Union, due to the installation of missiles in Cuba.
The event is considered the most tense moment in the Cold War when the world had real chances of succumbing to nuclear war.
The United States chooses to make a naval blockade against Cuba, a quarantine, as it was called.
In it, the US Navy would inspect Soviet-flagged ships and those containing weapons would be sent back to their home port. The initiative was supported by NATO.
In Cuba, the population took to the streets to defend the Revolution and criticize what they thought was an intervention in their internal affairs. Likewise, the Cuban army mobilized in anticipation of an American invasion.
As for the USSR, President Nikita Kruschev (1894-1971) showed no signs of retreating. He even asked Cubans to fire in a group of planes that flew over the island.
Only on October 26 did the Soviets offer another solution: they would commit to withdrawing the missiles if the United States did not invade Cuba.
The next day, an American U2 was shot down on the island, causing American generals to pressure President Kennedy for an air strike.
Faced with the impasse, the United Nations convenes its Security Council. On October 28, Kruschev agrees to remove the missiles from Cuba.
Later, in an unofficial agreement, the Soviets demanded the withdrawal of the missiles in Turkey, which was done by the United States.