Answer:
C.
Step-by-step explanation:
Leroy Johnson was elected as a Georgia State Senate in 1962. He was the first black to be elected after Reconstruction. He played a vital role in desegragating Atlanta and the state capitol of Georgia by introducing unified bathrooms and water taps.
The reason that Leroy Johnson was the first black to be elected since 1906 is that he was the first to run for the office. Since the state was segregated, and Johnson had a good reputation, he got elected.
Therefore, option C is correct.