Question

how did the debates between lincoln and douglas lead to a shift in lincolns focus?
a lincoln concedes that states have the right to make their own laws regarding slavery but does not make a definitive stance on new territories slavery rights.
b lincoln agrees that the sovereignty of each state is protected by the constitution but argues that slavery is a moral injustice that must be stopped.
c lincoln concludes the real issue is the difference between right and wrong and laments it will be an unsolvable struggle for all of time.
d lincoln declares that an enslaved person is the same as other property and concedes that douglas argument is entirely logical.

Explanation:

Lincoln - Douglas debates centered on slavery. Lincoln saw it as a moral injustice. Analyzing the options, A is incorrect as Lincoln didn't change stance on states' rights regarding slavery. B is wrong as Lincoln didn't agree states' sovereignty protected slavery. D is incorrect as Lincoln didn't concede Douglas' argument was logical. C is correct as Lincoln did believe the real issue was the moral difference between right and wrong regarding slavery.

Answer:

C. Lincoln concludes the real issue is the difference between right and wrong and laments it will be an unsolvable struggle for all of time.