Clothes dryers manufactured by Archway Appliances, Inc. are of poor quality. Crucial bolts are missing and some sections are assembled in the wrong order, thereby creating a shock and fire hazard. Concern for safety and quality is conspicuously lacking. So Archway must use shoddy, substandard components in its clothes dryers.
The argument is most vulnerable to criticism on the grounds that it fails to consider the possibility thatThe argument gives evidence that the dryers are badly assembled, then concludes that the parts themselves must be low quality.
The flaw is a shift from poor construction to poor components. Bad assembly does not prove that the parts used are
substandard.
(A) there is not a single known case of an Archway dryer starting a fire or electrocuting someone
This does not address the flaw. Even if no accident has occurred yet, missing bolts and wrong assembly can still create a hazard.
(B) there are aspects of dryer construction that are more relevant to the quality of the finished product than those mentioned
This is not the main issue. The argument already gives enough evidence that the finished product is poorly constructed; the problem is the jump from poor construction to poor components.
(C) Archway's dryers consistently perform well and enjoy considerable customer loyalty
This weakens the claim that the dryers are poor overall, but it does not directly expose the specific reasoning error from bad assembly to bad parts.
(D) a shoddily constructed appliance can be made of high-quality parts
This is correct. If an appliance is badly assembled but made from high-quality parts, then the evidence about missing bolts and wrong assembly does not prove that Archway uses substandard components.
(E) Archway's other product lines exhibit careful and safe assembly and use high-quality components
This is irrelevant. The argument is about Archway’s clothes dryers, not its other products.
Answer: (D)