Answer:
Listing characters and their personality traits
Explanation:
By doing so you are understanding the characters better and are more likely to form better predictions, not saying that they will be right, but a better chance nonetheless.
Frederick Douglass, ... While both Douglass and Lincoln, inspired by the ideals of liberty and equality enshrined in the Declaration of Independence, agreed that slavery was immoral, they disagreed on the best method to abolish the institution. Frederick Douglass was a compelling force in the anti-slavery movement. A man of moral authority, Douglass developed into a charismatic public speaker.
D: the answer that makes the most sense is gratify
I think the author chose to start the book 19 years before the main events of the story so the reader could absorb things. The author technically wanted the reader(s) to understand something before reading the real story.