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Part A How does paragraph 9 fit into the overall structure of the article?

A. It shows that studying an error led to progress in medicine. 0 B. It shows that doctors did not need to clean their hands or tools. O C. It tells what happened to President Garfield after he was shot. OD. It shows that there were no advancements in medicine before 1881.

Part B Which sentence from paragraph 9 best supports the answer to Part A? OA. "In 1881, President James Garfield was shot as he entered a train station​