b) John Lewis
John Lewis was a key civil rights leader and chairman of the Student Nonviolent Coordinating Committee (SNCC). Lewis played a pivotal role in organizing sit-ins, Freedom Rides, and other major protest activities during the civil rights movement. His passionate commitment to nonviolence and justice made him one of the movement’s most influential figures, and he continued to serve as a voice for civil rights throughout his life in the U.S. Congress.