The story reads well up through sentence 5, but things get a bit confusing with sentence 6. What makes Renee blush? Is it really in response to her ringing the doorbell? Sentence 7, the answering of the door, should naturally follow sentence 5, the ringing of the bell. So where, then, should sentence 6 go? We learn in sentence 8 that Renee is the only person wearing a costume. If you consider what it is that makes Renee blush, it stands to reason that sentence 6 should follow sentence 8. Thus, the best answer here is B.
