How does the section "freedom and abolitionism" reflect a central idea of the article?

a. it highlights that people in the north were not always willing to accept the abolition of slavery.

b. it shows how douglass became a famous author with many bestselling books.

c. it gives powerful examples of douglass' life as a slave and how he managed to escape to become a free man.

d. it describes how douglass escaped from slavery and fought for people's rights.