46. What is the purpose of the story at the beginning of the article?
(A) The author wants to show off his or her medical knowledge.
(B) The article uses the story to support the argument of Atul Gawande’s book.
(C) The story provides a counterargument against the importance of checklists in medical practice.
(D) The author uses the story to criticize the lack of clean medical equipment in large hospitals.