Explanation

I think B would be correct because it doesn't help explain why Texas T and Aunt Sally's beans sold more, whereas the other answer choices are giving reasons (such as price and availability) that can help explain the paradox

i agree with julie. If people showed more of a preference, then why didn't R beans sell more?

I got it wrong because I failed to recognize it was an EXCEPT question:-(

If many stores do not carry R-bar beans, that would explain them selling less R-bar beans than their competitors... Therefore resolving the paradox. Am I missing something?

Hi, that would indeed resolve the paradox. This is an except question, the four wrong answers will resolve it and the right answer will not resolve it.