Why did europeans in the caribbean colonies turn to africans to replace the native peoples as slaves?
a.
they believed that africans were physically superior.
b.
the preferred africans as people, and considered them to be culturally more advanced that the native peoples of the caribbean.
c.
the native populations of the caribbean had been decimated by european diseases.
d.
african slaves were less expensive than caribbean slaves.

C.  The native populations of the Caribbean had been decimated by European diseases.

Explanation:

The Europeans tried to enslave the Americans initially. However, the native people did not have the genetic immunities to conquer the diseases, and this led to the catastrophic mortality of the population in the natives of America. Because of this reason, they were not fit for slavery.

The Africans, on the contrary, had the needed immunities, and the Europeans discovered this in the 1500s during the trade in the Atlantic region, and they, therefore, developed rapidly and filled the demands of required slavery.

i'm sure the answer you are looking for would be

a. an ice age

hope this contact me if this didn't or you need with more answers : )