The statement that BEST expresses the different purposes that Sibley and Douglass had when they wrote their respective pieces is:
Sibley writes to inform; Douglass writes to persuade (Option A)
<h3>Who is Frederick Douglass?</h3>
Frederick Douglass is an American author, abolitionist, and orator. In his independence day oration, his goal was to persuade the people to adopt the extreme position of abolition.
He also wanted to change the perception of people about the intelligence of African Americans.
Learn more about Frederick Douglass at:
brainly.com/question/16024772
