(A) None of the answers are correct; Lincoln did not have an opinion on slavery.
(B) He was opposed to slavery so much that he was determined to go to war over it.
(C) He was a supporter of slavery but opposed to the power it gave planters in the South.
(D) ** He was opposed to the spread of slavery, but would tolerate it in the states where it already existed.
EXPLANATIONS BELOW
Concept note-1: -Lincoln was morally opposed to slavery and politically opposed to any expansion of it. At issue was its extension into the western territories. On October 16, 1854, in his Peoria speech, Lincoln declared his opposition to slavery, which he repeated as he sought the presidency.
Concept note-2: -Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it. I think Slavery is wrong, morally, and politically. I desire that it should be no further spread in these United States, and I should not object if it should gradually terminate in the whole Union.
Concept note-3: -Lincoln thought secession illegal, and was willing to use force to defend Federal law and the Union. When Confederate batteries fired on Fort Sumter and forced its surrender, he called on the states for 75, 000 volunteers. Four more slave states joined the Confederacy but four remained within the Union.