The correct answer is C)President Kennedy did not supply US air support.
The Bay of Pigs Invasion was an attempt by the federal government to overthrow the communist leader of Cuba (Fidel Castro). To do this, the FBI secretly trained Cuban exiles in order to overthrow the government. When the troops invaded, they were vastly outnumbered. When the military advisors told Kennedy to support them with air forces, he refused. Kennedy believed that using US air support would cause a strong reaction from the Soviet Union (the biggest ally of Cuba at this time). Not wanting escalation, Kennedy took this as a failed invasion.