During the Lincoln-Douglas debates, Stephen A. Douglas upset southerne

During the Lincoln-Douglas debates, Stephen A. Douglas upset southerners by arguing in Freeport that

A) the Dred Scott decision was unconstitutional.
B) the Dred Scott decision was part of a southern conspiracy to make slavery legal in all the states.
C) regardless of the Dred Scott decision, local laws could still exclude slavery from a territory.
D) though an inferior people, blacks had an equal right to life, liberty, and the fruits of their own labor.

ANSWER
C