Answer:
The statement that would a proponent of self-determination or black nationalism most likely agree with is African Americans should be proud of their heritage.
Explanation:
One of the fundaments of self-determination for any kind of population, race, or social group is to keep a strong attachment to their roots, who they are and where do they come from, which is the same as talking more in specific for African American citizens the black nationalism, though being true to themselves and continue their cultural heritage they will reinforce and assure their place in society.
