By 1800, the average size of american farms was acres.

There was a lot of land available in America in the 1800's. The average farm of an American that owned land was around 100-150 acres. This allowed them to establish big farms in the area and utilize the area as they please. In the time period, slaves were common so landowners would use slaves to do most of the labor work. 

Ibelieve the answer is c