@7Sage Tutor could you also explain how AC) B is compatible with the argument? The answer says that administering gamma interferon to those without MS increases WB cells, but does that imply that MS would also increase WB cells in those with MS?

This was a really helpful explanation, thank you. I feel like I got caught up with trying to diagram out the conditionals in the question, as if it were an SA question, instead of considering what is necessary to the argument.

@Aliza GGG I was stuck on this question too and chose E as well, but I think it's because the text says "Whatley's plan also affords farmers the advantage of selling directly to consumers, thus eliminating distribution costs."

E is incorrect because the distribution costs are not being paid for by customers. The dist. costs are eliminated altogether because crops aren't being dist. but rather are being selected by the customers.

"So I give myself this opening question here... as if I'm writing an article for the New Yorker or something..."

I like how JY will roast answer choices that seemed sort of reasonable to me when I was taking this

I get confused by the fact that a valid inference can't be made when all is before most.

same, I didn't see how B was already sufficient. it was helpful to hear JY explain how the conclusion was "couched within the hypothetical world" where steel plants could feed heat into these generators, I just hope I'm able to spot this trick going forward

I was stuck because it didn't seem like the author raised that many (ie. "a number of") explanatory hypotheses!

They just mentioned personal preferences and then hist. transform. (such as migrat. and seculariz.) I suppose that's three total? The author was mildly favorable to the two mentioned hist. transformations.