Answer:
c
Step-by-step explanation:
Nelson Mandela was imprisoned for 27 years for his protest against the government of South Africa and the rules of Apartheid. Apartheid was a set of laws that divided South Africa between black Africans (the majority of the population) and whites (the ones in political power). In 1994, after the official end of Apartheid, Nelson Mandela became the president of South Africa.