The correct options are
A He was sentenced to life imprisonment in 1964.
C He condemned the Apartheid system.
Nelson Mandela was sentenced to life imprisonment in 1964. He made a speech during his trial in which he condemned the Apartheid system. He was sent to South Africa’s most dreaded prison, Robben Island. He came out of prison after 28 years. The ANC won the first free elections in South Africa and Mandela became the first president in 1994.