Acrobatic acts account for 20% of the stage time yet cause 3

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Acrobatic acts account for 20% of the stage time yet cause 30% of mishaps for Cirque de Soleil amounting to 40% of show's insurance cost. The most daring of these acrobatic acts performed at a height of 50 meters however had a 6 times lower mishap rate than the acrobatic acts performed at 20 meters and 10 meters. Therefore, Cirque de Soleil can lower its overall insurance costs by requiring that all the acrobats perform their acts at 50 meters.

Which of the following, if true, most seriously weakens the argument?


A. It is unlikely that the total stage times for acrobatic acts will reduce in the near future.
B. Most mishaps at 10 meters cost much higher than does the average mishap does for Cirque de Soleil but 15 percent lower than the average mishap cost at 50 meters
C. Only Cirque de Soleil's best acrobats, those who have mastered the most demanding moves are currently allowed to perform at 50 meters.
D. The overall mishap rate for acrobats in Cirque de Soleil has only improved slightly over the past 2 years.
E. Most acrobatic mishaps result in serious injuries that take months to heal

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Source: — Critical Reasoning |

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by Kasia@EconomistGMAT » Fri Sep 28, 2012 2:45 am
A - irrelevant, stage time can remain the same, only the height at which all acts will be performed will change
B - irrelevant, the cost of each type of mishap is not related in any way to the fact that mishaps on 50 m happen much more seldom
C - correct, if only the best acrobats perform at 50 m, worse ones will have accidents the same as they have at lower heights
D - irrelevant to the conclusion, the overall number of mishaps is of no importance
E - irrelevant, the time of recovery has no influence on the number if mishaps at 50m
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by nasheen » Fri Sep 28, 2012 11:44 pm
Hi Kasia

Thanks for an explanation.
I am always stuck with two close call answer choices and end up taking wrong one.
especially in weaken.
please help me?