Which sentence from the autobiography best demonstrates Douglass's main idea that slavery is dehumanizing?
a.
"He [master] was a cruel man, hardened by a long life of slaveholding."
b.
"The home plantation of Colonel Lloyd wore the appearance of a country village."
c.
"I had known what it was to be kindly treated."
d.
"The week before our intended start, I wrote several protections, one for each of us."