The correct answer is B. The Defiance Campaign.
The Defiance Campaign against Unjust Laws was presented by the African National Congress (ANC) at a conference held in Bloemfontein, South Africa in December 1951. In major South African cities, people and organizations performed acts of defiance and civil disobedience. The protests were largely non-violent on the parts of the participants, many of whom wore tri-color armbands signifying the ANC.