HIRAM REVELS, THE FIRST BLACK MEMBER OF THE UNITED STATES SENATE, SERVED AS SENATOR FOR MISSISSIPPI, AN OFFICE _______ HE WAS ELECTED IN 1870

7. - DE THI THU NXB BO GD CO DAP AN
DE THI THU NXB BO GD CO DAP AN
7. Hiram Revels, the first black member of the United States Senate, served as senator for Mississippi, an office _______ he was elected in 1870.A. which B. in which C. and which D. being which