Which sentence from the speech best supports the inference that Douglass does not need to argue against slavery because it is clearly immoral?

А "At a time like this, scorching irony, not convincing argument, is needed."

B "There is not a man beneath the canopy of heaven who does not know that slavery is
wrong for him."

C
“I have better employment for my time and strength than such arguments would imply."

D "There is not a nation of the earth guilty of practices more shocking and bloody than are
the people of these United States at this very hour."