The correct answer is D) African Americans won Congressional and state legislative representation from Southern states.
During the era of Reconstruction, African-American received the right to vote thanks to the 15th amendment. Since African-Americans received the right to vote, they now had the opportunity to vote for any candidate they wanted. Due to this new found freedom, many African-American males ran for positions in government. This resulted in the election of the African American Senators like Hiram Revels and Blanche K Bruce.