Read the excerpt from Narrative of the Life of Frederick Douglass. I was born in Tuckahoe, near Hillsborough, and about twelve miles from Easton, in Talbot county, Maryland. I have no accurate knowledge of my age, never having seen any authentic record containing it. By far the larger part of the slaves know as little of their ages as horses know of theirs, and it is the wish of most masters within my knowledge to keep their slaves thus ignorant.

Which central idea is developed and supported by this passage?

A) Hypocrisy in religion is used to justify slavery.

B) Justice for enslaved people is impossible.

C) An enslaved person is treated no better than an animal.

D) Keeping people enslaved makes slaveholders inhuman.