A because you should tell what the paragraph is about, provide evidence to support your topic, and explain how the evidence supports your topic.
A. to ensure the success of compulsory voting in America
Another word for no regrets is impenitent.
Impenitent means to not have any regrets or feel any shame about one's attitude or actions.
Examples of impenitent in a sentence :
-The bully was impenitent when he pushed the little boy off the swings.
-Julie's impenitent attitude after reading Sara's diary in front of her whole class, led to detention from the Headmistress.
Since segregation laws did not provide equal protections or liberties to non-whites, the ruling was not consistent with the 14th Amendment. The others contradict the initial question in one way or another.
