Why is E not the answer?

I meant C, not B

Can you please explain why the answer is C?

Hi @MissBoss03, @rmkrutz@crimson.ua.edu, thanks for your posts. The stimulus can be diagrammed as follows: Conclusion: The recent concert was probably not properly promoted [PP]. Premise: W, who is quite knowledgeable about the concert business, was certain that it would sell out unless it was poorly promoted. not SO ==> PP (if it did not sell out, then it was poorly promoted) CP: not PP (ie, if properly promoted) ==> SO (sell out) Premise 2: But the concert did not sell out [not SO] Answer choice (C) can be diagrammed as follows: Premise: My neighbor, who is an experienced home renovator, said the damage to the wall would not be noticeable if it were properly repaired. PR ==> not N (if properly repaired, then not noticeable) CP: N ==> not PR (if noticeable, then not properly repaired) Premise: One can still notice the damage [N] Conclusion: Thus, the repair to the wall probably was not properly done [not PR] Answer choice (E) can be eliminated: Premise: If tests properly conducted, would find lead in soil. TPC ==> LS Premise: the tests DID find lead in the soil [LS] Conclusion: the tests were probably properly conducted [TPC] *This is an incorrect reversal, which is a flaw not present in either the stimulus or the correct answer choice, (C)* Hope this helps! Please let us know if you have any additional questions.