I think its B? judging the quotes he has stated.
The best sentence that shows the lack of interest of white Americans in the lives of African Americans and other minorities is “They shy away from romantic stories about Negroes and Jews because they feel that they know the public indifference to such works, unless the story or play involves racial tension.”
In this sentence of the excerpt we can infer publishing houses will not sponsor books or publications based on stories about minorities and black people because the public is not interested in those stories and would not buy books related to topics that have minorities as main characters.
The part of the excerpt from the Gettysburg in which Abraham Lincoln argue that the outcome of the war will depend on the determination and loyalty of northern citizens would be : ‘The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add and detract.
.edu because it shows that the site belongs to a school or institution.