The election of Jimmy Carter as governor of Georgia in 1970 helped change Georgia's negative image primarily because (B) he was a supporter of civil rights.
At the time of Carter's election, Georgia was still struggling to overcome its legacy of segregation and racism. Carter, however, was a proponent of racial equality and worked to promote civil rights in the state. He appointed African Americans to key positions in his administration, and he supported efforts to end discrimination in housing and employment.
Carter's progressive stance on civil rights helped to improve Georgia's image and reputation, particularly among African Americans and other minority groups. It also helped to attract new businesses and investment to the state, as companies were more willing to locate in areas that were perceived as progressive and inclusive.