题目选项分析

During periods when a large number of patients are admitted to a hospital, more qualified nurses are hired and more money is spent on nurse training than when the number of patients in a hospital is low. Thus, the average number of mistakes made by nurses should be lower during periods when there is a large number of patients in a hospital than when there is a small number of patients in a hospital and less money is available to hire qualified nurses and provide training to all nurses.

Which of the following, if true about a hospital during a period in which a large number of patients are admitted, casts the most serious doubt on the conclusion drawn above?

【选项】Its nurses have less time to spend with each patient than they have at other times.