Answer choice E

@shafieiava, Let's look at (E). (E) says, "PAHs are one of several components of automobile exhaust that scientists suspect of causing cancer." The problem with (E) is that it does not affect Erin's argument. Would the other compounds be affected by the PAH regulations? We do not know either way, so this doesn't have an effect on Erin's argument. (D) says, "Most of the PAHs released into the atmosphere are the result of wear and tear on automobile tires." (D) is great because if true, it would really weaken Erin's argument in favor of regulating automobile exhaust, as it shows that most of the PAHs are entering the atmosphere not from exhaust, but from tires. Thus, this is the correct answer choice. Does this make sense? Let us know if you have any other questions!

Thank you for your explanation. In this case, is B wrong for similar reasons, because the real casual factor is irrelevant to author 2's claim that scientists blame these diseases on PAH? Thanks in advance.

I think the issue with B is that it actually concedes Erin's point.

It agrees that PAH leads to tens of thousands of deaths which undermines alberts entire argument.