Question ID:PT76 S2 Q8 Passage:Merton: A study showed that people who live on very busy streets have higher rates of heart disease than average. I conclude that this elevated rate of heart disease is caused by air pollution from automobile exhaust.Ortiz: Are you sure? Do we know whether people living on busy streets have other lifestyle factors that are especially conducive to heart disease? Stem:Ortiz criticizes Merton's argument by  Correct Answer Choice:EChoice A:raising a question about the validity of the study that Merton cites Choice B:contending that Merton needs to take into account other effects of air pollution Choice C:claiming that Merton misunderstands a crucial aspect of the study's findings Choice D:raising a counterexample to the general conclusion that Merton draws Choice E:suggesting that alternative explanations for the study's findings need to be ruled out