Concept:The African National Congress (ANC) was the principal political movement that fought against apartheid in South Africa.
Explanation:The ANC was founded on 8 January 1912 to unite black South Africans in defending their rights.
It strongly opposed the apartheid system enforced by the National Party government from 1948 onward.
The ANC used peaceful protests, strikes, and legal campaigns to challenge racial discrimination.
After apartheid ended, the ANC won the first democratic election in 1994 and became the ruling party.
Therefore, the main party against apartheid was the African National Congress.
Answer:D. African National Congress