The correct answer is D) to emphasize the importance of this date and the terrible tragedy that has befallen the country.
By slowing down and emphasizing the date, the audience will take note of the tragedy. Slowing down during a speech is an indication of importance, seriousness, or sadness.
It shows that they’re fighting for their rights and they want to be equal. them being segregated and mistreated was unfair.
Did you mean to include a link to a story? :)