I thought the missing assumption was that topsoil erosion --> should strive to avoid, and I thought A was kind of a roundabout way of asserting that. Is this not an assumption we have to make because it is referred to deleterious in the first sentence?

re: the explanation on why option A is a trap — wouldn't saying that fundamentals can only be acquired by disciplined instruction also insinuate that it is also the best way?

I did pick B for Q19 and understand it, but I was hoping for more of an explanation for why D is wrong. "No difference between these things—other than that those in power use the opprobrious term 'plagiarism' when the work in question emanates from those whom they dislike" — could this not be interpreted as there being much fluidity in the way the charge is applied? #help #feedback

Does answer choice C necessarily mean that the gifts chosen by close friends and strangers are the same? I interpreted it to mean close friends choose better gifts, and so the gifts mentioned in the argument might've just been bad gifts. #help