From my experience, burn out is a big factor, as are sleep and eating habits. Personally, these factors account for about an 8 point swing between top testing form and worst.

What I found helped was taking a complete rest day - didn't touch my laptop. Spent the day doing chores and reading. Whenever you're next able to, maybe try that.

Another way to think of "sufficient" is "sufficient to guarantee". Being J.Y. is sufficient to guarantee that you work at 7sage. Working at 7sage is not sufficient to guarantee that you are J.Y. (you could be one of the other staffers).

I think the problem I ran into with Q14 is the ambiguity in the terms "impact... on creative output". I interpreted this to mean "the impact that having norms has on the levels of creative output", which is discussed in A but not B. I suppose that the alternate interpretation that LSAC expected us to have is something more like "norms are being considered in the process of creative output".