The correct answer is:
D. It gave slave-holding states more influence than was warranted by the size of their voting population.
The Three-fifths Compromise allowed slave-holding states to count three-fifths of their enslaved population for purposes of representation and taxation, thus providing those states with greater representation in Congress than they would have had based solely on their free population. This increased influence contributed to tensions between slave-holding and free states leading up to the Civil War.