8. (B)
Question type: Analyze Argument Structure
Tyra says she accepts the principle Otis uses as evidence but then reaches a different conclusion. Why? She accepts the principle, but she doesn’t agree with it’s application here. We can infer that Tyra views friendship as a mitigating circumstance: a friend coming to you after hours is not relevantly similar to a stranger coming to you. Therefore, (B) is the correct answer.
(A) is incorrect because "widely applicable" is not at issue.
(C) goes beyond what is stated in the text.
(D) is an extremely attractive answer, but it differs subtly from the original argument. Do we know that either Otis or Tyra agrees with this statement? Tyra certainly doesn’t. Otis might, but he might also feel that dentists shouldn’t see anybody at all after hours _ all he actually seeks is consistency. Since neither of them can be shown to agree with this statement, it can’t be at the center of a disagreement.
(E) is outside the scope of the argument.