#help, did not read this as a must be true question, is that what properly inferred means?

Question 8 just reminded me how important it is to read a little slower and more thoughtfully

Can't something be false even with evidence in it's favor though?

I'm a little confused - doesn't it not have to be true that some historians accounts are prejudiced for the conclusion to be true? All the author is saying (to me) is that "some historians accounts are prejudiced, so even ones claiming to be objective must be wrong". It doesn't seem like AC D is required for the argument to follow

Ultimately got the question right via POE. But "culture" confused me because couldn't that be viewed as an organic factor contributing to the symptoms? 

I got this right via POE, but aren't we making an assumption that there were also more cookbooks sold than in any previous year. All they say is "more cookbooks sold last year". Are we to make the link that this means more cookbooks are sold than any other previous year?

Just because B makes a positive correlation between Number Mag Sites and Lamps doesn't mean it has explanatory power right??