Concept:The South African Native Congress (later ANC) was formed to unite Africans and demand their rights, especially the right to take part in government.Explanation:The SANNC was founded in 1912 after Black South Africans were excluded from political power in the new Union of South Africa.Its key aim was not to create a separate political party but to fight for the inclusion of Black people in the political process and governance.Thus, encouraging black participation in governance best fits the founding objective of the Congress.Answer:B. encourage black participation in governance