The correct answer is A) a white farmer living in Baker County.
The people that would have most likely benefitted from the old County Unit System is a white farmer living in Baker County.
The State of Georgia used the old Counting Unit System to declare the winner in the primary elections. The County Unit System lasted from 1912 to 1962. It chosed the winner by unit vote in each county instead of popular votes. It gave rural people more opportunities for representation than the people of the big cities. That is why the people that would have most likely benefitted from the old County Unit System is ) a white farmer living in Baker County.