Answer: D. a counterclaim to the idea that most people are moral.
Explanation: a counterclaim is a claim made to rebut an idea, in this case that idea is that most people are moral, according to the excerpt this idea was in a lesson by Socrates. The counterclaim was made by a student named Glaucon who, by telling a story from Plato's Republic, expressed his argument about how the humans couldn't resist the temptation of evil if they knew no one would see them.
It's simple, the answer is 'a'.
Well, in case you would need some help in writing, I would recommend you to contact Supreme essay service. They are real professionals in what they do. Good luck!
I need the story to help you
A. but im second guessing myself hmmmmmmm......