I think the answer is (B). Hope this helps!
The answer is People vote for representatives who will make decision on their behalf. This method became the basis of modern democratic government that we use today. In our current system, the people could not directly vote for the regulations. But, the people had the power to appoint the person (representatives) that held their interest.
Democratic dominance of the South originated in the struggle of white Southerners during and after Reconstruction (1865–1877) to reestablish white supremacy and disenfranchise blacks. The U.S. government under the Republican Party had defeated the Confederacy, abolished slavery, and enfranchised blacks.