Read the following selection from the section “Ignoring The Idea That All Men Were Created Equal."

Northern states protested, saying it gave southern states an unfair and unethical advantage. Their compromise? Delegates decided that each slave would count as three-fifths of a person, giving the South more representation. They also agreed that the slave trade— but not slavery itself — could be banned 20 years hence, in 1807. It was a concession to Northern states that had abolished slavery several years earlier.

Which of the following words from the selection provides a context clue to the meaning of the word "concession"?

A
unethical
B
compromise
C
representation
D
abolished