Concept:Steve Biko was a prominent anti-apartheid activist and the leader of the Black Consciousness Movement in South Africa.Explanation:He fought peacefully against the apartheid system and encouraged black South Africans to take pride in their identity.He was arrested and detained by the security police.Steve Biko died while in police custody on September 12, 1977.Historical records confirm that his death occurred in the year 1977.Answer:The correct option is C. 1977.