The correct answer is C) did not support abolition.
A similarity between the views of Abraham Lincoln and Stephen Douglas was that both did not support abolition.
Democratic Senator Stephen A. Douglass and Republican candidate Abraham Lincoln debated seven times during the senatorial campaign in Illions, 1858. The main topic: slavery. The debates were harsh, they criticize each other and at the end, Lincoln lost the election. During one of the debates, Lincoln delivered the famous "House divided speech," influenced by a Bible passage.
The other options of the question were A) both supported popular sovereignty, B) did not support popular sovereignty, and D) supported abolition.