D is the answer.
CU's Plan: increasing tuition by 10% and using the extra money to offer more attractive compensation packages to the most talented and well-known members of its faculty
Conclusion: CU's plan would protect the school's ranking
Weaken: Show reasons to prove that the proposed plan would have no effect on the school's ranking or that some other factors that are not addressed in the stimulus are needed to protect the ranking. Choice D exactly does that.
In the last two years alone, nearly a dozen of Central University's most prominent professors have been lured away by the higher salaries offered by competing academic institutions. In order to protect the school's ranking, Central University's president has proposed increasing tuition by 10% and using the extra money to offer more attractive compensation packages to the most talented and well-known members of its faculty.
Which of the following provides the most persuasive argument against the university president's proposed course of action?
A) It is inevitable that at least some members of the faculty will ultimately take jobs at other universities, regardless of how much Central University offers to pay them.
Some or few of the members taking jobs at other universities may not have much effect.B) Other universities are also looking for ways to provide higher salaries to prominent members of the faculty.
What if other universities execute the same plan? CU's plan could still be successful.C) Central University slipped in the last year's ranking of regional schools.
Last year's ranking would have nothing to do with success of the plan this year. D) The single most important factor in ranking a university is its of racial and socioeconomic diversity.
E) The president of Central University has only been in office for 18 months and has never managed such a large enterprise.
President's experience and skills are irrelevant to success of the plan.