Answer:
End slavery where it existed.
Explanation:
The whole campaign and issue that Abraham Lincoln pursued to be elected the President of the United States revolve around that of slavery. He emphasized hugely the need for the freedom of slaves and how his dream was to make everyone equal, slaves or white men.
But once he was elected the president of the country, he expressed that he had no intention of getting involved in the slavery issue of the South. He said, "I have no purpose, directly or indirectly, to interfere with the institution of slavery in the States where it exists. I believe I have no lawful right to do so, and I have no inclination to do so." So, even though he was personally against the slavery system, he had no intention of getting involved in the politics of the Southern states where slavery is still practiced. This was because he wanted the South to join the United States and thus, chose to keep their slavery system in favor of making the Southern states join the nation/ Union.
Thus, the correct answer is the third option.
