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02 Jan 2014, 17:12
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
81% (01:25) correct
19%
(01:47)
wrong
based on 439
sessions
History
Date
Time
Result
Not Attempted Yet
Advertisement: Fabric-Soft leaves clothes soft and fluffy, and its fresh scent is a delight. We conducted a test using over 100 consumers to prove Fabric-Soft is best. Each consumer was given one towel washed with Fabric-Soft and one towel washed without it. Ninety-nine percent of the consumers preferred the Fabric-Soft towel. So Fabric-Soft is the most effective fabric softener available.
The advertisement’s reasoning is most vulnerable to criticism on the grounds that it fails to consider whether
(A) any of the consumers tested are allergic to fabric softeners
(B) Fabric-Soft is more or less harmful to the environment than other fabric softeners
(C) Fabric-Soft is much cheaper or more expensive than other fabric softeners
(D) the consumers tested find the benefits of using fabric softeners worth the expense
(E) the consumers tested had the opportunity to evaluate fabric softeners other than Fabric-Soft
The advertisement’s reasoning is most vulnerable to criticism on the grounds that it fails to consider whether
(A) any of the consumers tested are allergic to fabric softeners
(B) Fabric-Soft is more or less harmful to the environment than other fabric softeners
(C) Fabric-Soft is much cheaper or more expensive than other fabric softeners
(D) the consumers tested find the benefits of using fabric softeners worth the expense
(E) the consumers tested had the opportunity to evaluate fabric softeners other than Fabric-Soft
Source: LSAT-CR
02 Jan 2014, 18:50
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nechets
Dear nechets,
This is a great question, and I am happy to help.
LSAT questions are fantastic practice for the GMAT CR. This argument has a gaping flaw. Consumers compared
(a) towels washed, presumably with detergent, but with no Fabric-Soft
vs.
(b) towels washed with detergent & Fabric-Soft
Almost everyone liked (b) better than (a), but does this mean that folks liked Fabric-Soft in particular, or just the use of some fabric softener in general? The experiments conflates the presence of a fabric softener with the brand Fabric-Soft, so a conclusion about either one of those is confounded. To resolve that, we would have to compare towels washed in Fabric-Soft to towels washed in other fabric softeners, before we could legitimately conclude that Fabric-Soft is the best. The argument inappropriately leaps to that conclusion from the confounded evidence.
The problem is the absence of other brands of fabric softeners in the consumer testing. Choice (E) addresses this, and is the OA.
Mike
