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Bunuel
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We have to find fault with the selection of team which the owner chooses to retrain. It chooses the team who takes most time to complete the project - looks logical as the team who takes more time to complete seems to be less efficient. But what if the team that takes most time to complete was given a complex project. Then the higher time taken is due to the complexity of the project and not because of inefficiency. This is that C says - it is correct.
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Bunuel
An engineering firm specializes in installing environmentally friendly components, such as solar panels and green technology, on the rooftops of many different types of buildings in a large urban area. Each project is assigned to one of several installation teams. The owner, who is concerned with costs, is conducting an analysis of worker efficiency. Once he has completed the analysis, he plans to retrain the team that has the highest average projected completion time in order to improve that team's efficiency.

Which one of the following, if true, most seriously calls into question the owner’s plan for selecting the team to be retrained?

A. The installation fees that the firm charges its customers are lower than those charged for similar projects done by other companies.

B. If the time that the team takes to finish a project is not lowered significantly, the firm could lose business to competitors.

C. The team that has the highest average completion time tends to be assigned the most complex projects.

D. Retraining the team will substantially increase the short-term costs of the firm and thereby impact its profitability.

E. Maximum efficiency can only be achieved if the team with the highest average completion rate is terminated.


KAPLAN OFFICIAL EXPLANATION:



Since the question asks for a choice that seriously calls the owner’s plan into question, this is a Weaken question. The owner is concerned with costs, and the owner’s criterion for selecting the team to be retrained is the “highest average projected completion time.” Find a choice that casts doubt on using that particular measure as a criterion for retraining. Predict that the correct answer will probably indicate that the team that takes the longest to complete projects is either not actually inefficient or is so unskilled that retraining will not help.

(C) accords with this prediction: the projects that are the most complex would reasonably take longest to complete. If a team is repeatedly assigned complex projects, the team’s average completion time will inevitably be higher than that of other teams. If this is true, the owner would not be justified in concluding the workers are inefficient or in need of retraining.

(A) is an irrelevant comparison, because the installation fees that this company or other companies charge are not related to worker efficiency. While (B) would give the manager a reason to reduce inefficiency, this choice does not relate to his specific plan for selecting the team to retrain. (D) may call into question the decision to retrain any team, but the question asks you to weaken the argument for choosing the team that takes the longest to complete projects, and (D) does not challenge this criterion for team selection. How "maximum efficiency" could be achieved, as in (E), is irrelevant to whether retraining the slowest team would improve efficiency.
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