Answer: B. Slavery goes against the American ideal that all men are created equal.
Explanation: Abraham Lincoln was strongly opposed to slavery and believed that it was contrary to the principles of the United States. He viewed slavery as a moral issue and believed that it was a violation of the principles of the Declaration of Independence, which held that all men are created equal and endowed with certain unalienable rights.
Therefore, it is most likely that Lincoln would support the statement that "Slavery goes against the American ideal that all men are created equal."