Which of the Following Is One of the Central Ideas

Which of the following is one of the central ideas in Frederick Douglass's speech "The Composite Nation"?

A) Human rights are universal and indestructible and include the ability of people of all races to migrate freely from one place to another.
B) It is not possible for African-Americans to be true Americans because the horrors of slavery were so pronounced.
C) Because of its Constitution, the American government can always be trusted to govern by wisdom rather than "race pride."
D) African-Americans inherently have more human rights than Native Americans because they are not subject to treaties.
E) Because land in the United States is scarce, African-Americans and other minority groups should consider relocating to other, more welcoming countries.