I'm still confused as to how and why Jon's explanation in the video is used to express answer choice A is correct and answer choice C is wrong. I'm not following his logic in the video. Can somebody please explain this? Also there was a comment below the video that there are plenty of old LSAT questions with similar type of errors. I'm not sure, but can somebody point out those questions and the type of error? Thanks.
https://7sage.com/lsat_explanations/lsat-64-section-1-question-16/