8. (E)
Question Type: Identify the Flaw
We can anticipate the flaw in this argument even before reading the answer choices. The test allowed consumers to compare a towel washed with Fabric-Soft with a towel washed without it. Thus, they could conclude that they like the Fabric-Soft towel more, but they cannot necessarily conclude that Fabric-Soft is the most effective fabric softener. After all, they haven’t even tested any towels washed with other softeners. The advertisement fails to consider whether the consumers tested other softeners. Answer (E) expresses this.
(A) is incorrect. Whether or not consumers are allergic is irrelevant
(B) is irrelevant. The environment is not at issue in this argument. The focus is whether Fabric-Soft is the most effective softener.
(C) is incorrect because cost is out of scope.
(D) is wrong as well. Cost-benefit is not the issue. The only thing at issue is whether Fabric-Soft is the most effective at doing its intended job (regardless of how much it costs).
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