They had to stay on topic. if they strayed to far people might not understand them. AND the entire goal of the Declaration of Independence was to bring the countries together so they understand.
He is saying to not judge a person before knowing them properly. To understand the perpectives of people that face things like discrimination and not to have bad opinions on them.
By giving the setting at the beginning of a story, it gives the reader an idea of what the plot will look like. If the setting of a story is in a haunted mansion on Halloween night, the reader has an idea that the plot will probably involve ghosts, chasing, capture, etc. Basically any Scooby-Doo movie ever. All in all, the setting gives the reader an idea of how the plot will lay out.
The correct answer is option B "accurately depict the African American experience". Langston Hughes the author of "The Negro Artist and the Racial Mountain", is considered a writer that introduced jazz in much of his poetry. In Hughes own words, he wrote so many jazz poems because "jazz to me is one of the inherent expressions of Negro life in America" (1512).