12 - Clothes dryers manufactured by Archway Appliances

[FlaneurR675]

Flaw question

Stimulus:
AA must be using substandard components in their dryers, since the dryers are of such poor quality

Prephrase:
Even if the parts are substandard, that doesn't guarantee that the end product is shoddy

Answer choice:
D directly corresponds to the prephrased answer: the outcome may still persist without the said cause.
B may be an attractive answer, but it deals only with the premise.

Lesson:
Always remember to look at the whole argument!