At first blush I interpreted "can" as "permitted to" instead of "is able to" and it took about 15 minutes working on the problem and tearing my hair out to realize I was astray... and I still got it wrong. lol.

I agree with other commenters that this is a terrible question, but I also feel compelled to point out JY seems to misunderstand the word "subsequently" at 5:15 in the video explanation, does he not? He asserts that because of the use of "subsequently," we have to assume they first sought membership on the chess team and then showed the increase in achievement. Wouldn't it be the other way around? From the stimulus, we know they did the program which led to the increased achievement, and then, from the answer choice, we get that they subsequently sought membership on the chess team. If we accept the order postulated by JY, neither hypothesis (busting ass or chess club) really works anymore because they would have sought to join the chess team before they got increased achievement levels. We are being told that they busted ass to get increased achievement levels so that they could then go out for the chess team requiring the high GPA. I'm more confused after watching the video explanation than before, and this was already a tough one. Most of the video explanations are great though!

Assuming that increased body size would be helpful against predators is an enormous and pretty unreasonable assumption lol. It is equally reasonable (in fact probably more so) to assume that smaller body size would be more helpful against a predator, as in so small they might not be seen at all, or be faster.

Not my brain mapping the last sentence in lawgic:

"unless" = Group 3 negate sufficient

/desire fewer friends → /recommended watching with friends

OR

recommended while watching with friends → desire fewer friends

I narrowed it down to A and E with PoE, and picked E. Ugh.

@yam Yeah I didn't see that one coming haha

Does anyone have a link to the Professor Dan Epps lecture? It appears it was not hyperlinked in the lesson.

@haena This is great. Thank you.

This is the first question I've seen where a plurality of respondents chose the wrong answer (myself included). Usually even on the hardest questions a plurality (if not a majority) still land on the right answer. This one's tough.

This question is far out.

I would have expected an answer choice along the lines of "Whether the reed boats work on heavier stones up to 40 tons." or something to that effect