I'm wondering If the H only has to be behind C, or can it be behind /T, as long as it is behind /P ? #help

garryathwal is correct. Answer choice "C' is wrong because if "most snorers do not smoke", it does not refute the possibility that it may be the case that smoking by itself CAN induce the snoring for "some snorers".

C: Another explanation as to why C is wrong is that "cancer ≠ death". The stimulus isn't talking about cancer deaths, but incidents of cancer. Even if you take "prominent" as to mean high, you're assuming that "cancer deaths" are high in countries with low average fat intake.

D: There is a logical reasoning path to this response. Without making an assumption, but giving it another alternative. Both are being correlated. So what weakens that? Another probability for one of those to happen. That's what D does when it says:

If the countries with high fat intake have high incidents of cancer, and those countries with high fat intake ALSO have the HIGHEST levels of pollution, then you give it the possibility that because pollution in these "high fat intake" cities are the highest (more than other cities), it may be the reason for why these cities have high incidents of cancer. High-fat intake may not even be the real correlation, is all this question is saying.