Joshua Smith's new novel was criticized by the book editor for The Daily Standard as implausible. That criticism, lik...

I got tripped up here because in my mind, I understood this answer to attack the main premises leading to the conclusion. I noticed the anecdotal evidence like everyone agreeing makes it so was used so I saw that answer choice and thought it was correct immediately. I see how D is correct, but why is B wrong? I don't see how this is irrelevant. Thanks