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14 Mar 2019, 11:41
5
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Difficulty:

55% (hard)

Question Stats:

48% (01:31) correct 52% (01:41) wrong based on 124 sessions

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Advertisement: We at Vesuvius Vacuums always give our customers what they deserve, and they deserve the very best. That’s why we use only SuperTec air filters.

Which of the following, if true, most undermines the argument expressed in the advertisement?

A. In a test of three leading air filters, the SuperTec air filter performed at the same level as one of the filters and at a higher level than the other.

B. The SuperTec air filter is the only kind of air filter that will fit in the model of vacuum sold by Vesuvius Vacuums.

C. In a national study by a prominent consumer group, Vesuvius Vacuums gained a “superior” rating for product quality.

D. The customers of Vesuvius Vacuums have expressed no preferences concerning the type of air filter used in the product.

E. The specific air filter used in a given vacuum makes only a small difference in the long-term performance of that vacuum.

Source: McGraw-Hill's GMAT
Difficulty Level: 700

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19 Mar 2019, 03:55
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Advertisement: We at Vesuvius Vacuums always give our customers what they deserve, and they deserve the very best. That’s why we use only SuperTec air filters.

Which of the following, if true, most undermines the argument expressed in the advertisement?

Conclusion : That’s why we use only SuperTec air filters

Support to conclusion : Vesuvius Vacuums always give our customers what they deserve, and they deserve the very best.

We need to undermine the support on the basis of which this conclusion is drawn.

A. In a test of three leading air filters, the SuperTec air filter performed at the same level as one of the filters and at a higher level than the other.

This answer choice shows that there may be other air filters which are as good as STAFs, but this choice does not tell why STAFs are being provided the customer and not others.

B. The SuperTec air filter is the only kind of air filter that will fit in the model of vacuum sold by Vesuvius Vacuums.

This is the correct choice. It says that VV is feeding customers with STAF because of compulsion and not because they deserve the best. Therefore, this choice weakens the big claims made by VV.

C. In a national study by a prominent consumer group, Vesuvius Vacuums gained a “superior” rating for product quality.

But does it tell whether VV is the only product with superior quality. There may be others much better than VV perhaps.

D. The customers of Vesuvius Vacuums have expressed no preferences concerning the type of air filter used in the product.

Irrelevant to the cause.

E. The specific air filter used in a given vacuum makes only a small difference in the long-term performance of that vacuum.

This is not a weakener. Small difference may be on the higher side or on the lower side. We can't say.
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15 Mar 2019, 14:20
Advertisement: We at Vesuvius Vacuums always give our customers what they deserve, and they deserve the very best. That’s why we use only SuperTec air filters.

Which of the following, if true, most undermines the argument expressed in the advertisement?

A. In a test of three leading air filters, the SuperTec air filter performed at the same level as one of the filters and at a higher level than the other.

B. The SuperTec air filter is the only kind of air filter that will fit in the model of vacuum sold by Vesuvius Vacuums.

C. In a national study by a prominent consumer group, Vesuvius Vacuums gained a “superior” rating for product quality.

D. The customers of Vesuvius Vacuums have expressed no preferences concerning the type of air filter used in the product.

E. The specific air filter used in a given vacuum makes only a small difference in the long-term performance of that vacuum.

Source: McGraw-Hill's GMAT

The stimulus states that the Company gives their customers the very best, and states that this is the reason why they use SuperTec filters only. In answer choice A, we are told that there is another
leading filter that is ranked higher than the SuperTec filter. Thus, the SuperTec filter is not the very best filter, and this answer choice undermines the argument.
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17 Mar 2019, 02:55
Answer A states that the SuperTec air filter performed at the same level as one of the filters, how could we be sure then Supertec is the best we do not have enough data to prove it. Answer B does not state that it is not the best one, it is just saying that SuperTec air filter is the only one that fits the Vesuvius Vacuums. Quite confusing between A & B.
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17 Mar 2019, 05:55
Option B contradicts the intention of the said company. This company uses this filter not because it is best, but the only only filter that can be used. Hence this undermines the conclusion.
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18 Mar 2019, 02:45
Easy to see why this question is poorly made...

B(the presumed right answer), does nothing to the argument that IT IS THE BEST AIR FILTER.It could be the only filter that fits and it also could be the best.

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Re: Advertisement: We at Vesuvius Vacuums always give our customers what t   [#permalink] 18 Mar 2019, 02:45
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