Which sparked the Cuban Missile Crisis?

the development of Cuban nuclear capability

the threat of an immediate Soviet attack on the United States

the discovery of Soviet missiles in communist Cuba

the protection of U. S. business interests in Florida

The correct answer for the question that is being presented above is this one: "the threat of an immediate Soviet attack on the United States." The issue that sparked the Cuban Missile Crisis is that the threat of an immediate Soviet attack on the United States