Why is the widely accepted view of what happened at Ashton Villa (General Granger's reading of the order of Emancipation) considered true despite concrete evidence that it is true?

General Grander shows that slavery not only occurs in physical form but also marks the enslaved souls. It made them distressed and tormented them emotionally.

Explanation:

Grander’s word marked that there should be freedom of expression, freedom in education, freedom of sharing views, freedom of living without any discrimination, freedom without any segregation, and freedom of improving themselves. Every person, despite their color, creed, and race, deserves equal rights being a human.

Slavery affected the whole nation, overlook someone based on their color, and the race is the worst thing which one can do. Enslave a particular race and distressed them on the level of injustice. Enslaving them only because of the absurd ideas that do not have any ground is lower than humanism.

the correct answer is d: "party organizers, volunteers, voters, and elected officials."