The correct answer is - C. socialist ideals.
In the year of 1959, Fidel Castor led a revolution in Cuba against the militaristic leader of the country that was set up by the United States few years earlier, and won. Castro managed to get hold onto the government and became the leader of Cuba. His ideals were much different than those of his predecessors, and Castro was a big fan of the socialist ideology, so he implemented it in Cuba. Because of this he quickly got support by the Soviet Union, China, North Korea, Yugoslavia, and became very friendly with them.
The situation in Cuba was the thing of nightmares for the United States. Not just that they lost their political and economic influence on the nearby island nation, but it became an ally with its biggest enemy, the Soviet Union. In fact, Cuba was extremely important during the Cold War because it served as a military base of the Soviet Union, and the United States were held in constant fear of attack.
