<h3>Answer:</h3>
A) a fear of European involvement in Latin America.
<h3>Explanation:</h3>
The Monroe Doctrine was a United States strategy of confronting European colonialism in the U.S starting in 1823. It declared that additional efforts by European states to take charge of an independent nation in North or South U.S would be observed as "the demonstration of a contrary disposition proceeding the United States." At the same event, the doctrine perceived that the U.S. would realize and not interpose with surviving European colonies nor interrupt in the internal affairs of European lands.
President Truman had the CIA train over 3000 Cuban exiles to overthrow Castro. Before the invasion, Kennedy took over office and approved it. The invasion failed miserably. In under 90 hours, over 2000 of the exiles were captured and the rest were killed. Kennedy denied to give them air support because he didn't want any US soldiers involved because it would start a war with Cuba and possibly provoke the Soviet Union. President Kennedy had the captured exiles released for a price of food and resources.
It was because they were inspired by the renewed interest in Greek and Roman culture.
The best answer is:
"C" More troops.
They were better trained, more equipped, and definitely had a much larger quantity.
I hope this helps!
~kaikers