OG12 53

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Most employees in the computer industry move from company to company, changing jobs several times in their
careers. However, Summit Computers is known throughout the industry for retaining its employees. Summit
credits its success in retaining employees to its informal, nonhierarchical work environment.

Which of the following, if true, most strongly supports Summit’s explanation of its success in retaining
employees?

(A) Some people employed in the computer industry change jobs if they become bored with their
current projects.
(B) A hierarchical work environment hinders the cooperative exchange of ideas that computer industry
employees consider necessary for their work.
(C) Many of Summit’s senior employees had previously worked at only one other computer company.
(D) In a nonhierarchical work environment, people avoid behavior that might threaten group harmony and
thus avoid discussing with their colleagues any dissatisfaction they might have with their jobs.
(E) The cost of living near Summit is relatively low compared to areas in which some other computer
companies are located.

D选项怎么不可以啊？十分不理解。。。