Answer:
Correct answer is D: He did not win a single Southern state, and he earned less than half of the national vote.
Step-by-step explanation:
D is correct as Lincoln won around 40 percent of votes, while winning in 18 states. Still, none of them was located on the South.
All other options are false because as we have said that he won no states in the South. Most votes in the border area were won by John Bell.