Afactor in the choice of labor used in the american colonies was that: a. indentured servants were returning to england after their colonial work. b. slaves knew how to speak english from training in african schools. c. native american populations were greatly reduced by disease. d. new ways of farming reduced the amount of workers needed.

C. Native American populations were greatly reduced by disease.

Explanation:

When the settlers established themselves in America, they were carrying diseases that the natives had never been exposed to. This caused them to get sick and die in huge numbers. In turn, this meant that the colonies were in need of cheap labour, and there was not enough people to provide it. Their first solution was indentured servitude, which eventually progressed in slavery, later associated with African ancestry.

where is the subject? hahahaha