I don't know why the existence of cheating would surprise you. They are underground industries everywhere in the world that assist students to cheat on exams. Back in high school, I knew someone who bought the answers to questions on SAT they were taking. But the point is: even if a few guys succeed in getting into top law schools by cheating, they most likely won't survive the rigorous studies there. So it's a mug's game.

Another good example of how basic knowledge in a different area helps to save one's time figuring out a convoluted LSAT question. I would have gone miles to break down the stim had I not taken multiple econ and accounting courses back in college.

AC D is tricky to me because I interpreted the "short-term consequence of a law's repeal" to mean the the potential loss of its long-term benefits, which is mentioned in the stimulus. I understand the link is rather weak but when I answered the question timed, my train of thoughts just brought me to that connection.

I think this question requires a bit of outside knowledge to spot the error faster. Older LSATs seemed to have more of these kind of Qs than recent tests.