Hello, everyone. I enjoy user-made questions, or at least questions that appear to be generated by members of the community. This one kind of reminds me of a
boldface question, since that passage type often uses jargon in the answer choices that sounds as if it belongs on the LSAT instead of the GMAT™, but anyway... We need to find a way to
weaken this argument, in as many words. What does the passage have in store for us?
vards
Recording Agent: Music industry representatives often advance the claim that “online file sharing,” (which allows someone who purchased a music CD to share contents with others using their computers—at no additional cost), hurts their business.
Since the advent of file sharing, however, music CD sales have actually risen; therefore, file sharing does not hurt the music business. In fact, file sharing seems to have had a positive effect on the music industry.
A. is
a circular argument, assuming what the argument sets out to prove
If you are unsure what a
circular argument might be, the latter half of the answer choice defines it for you. Does this passage assume what
the argument sets out to prove? Well, what is the argument? The conclusion is that
file sharing seems to have had a positive effect on the music industry. For this argument to be circular, we would expect this position to be stated or implied from the get go. Instead, we are presented with a claim that represents the other side. What follows in the second line is the evidence used to back up the conclusion:
music CD sales have actually risen since file online sharing began. The logic thus appears to be linear, with the passage presenting a claim, then evidence that goes against that claim, and finally a conclusion that is rooted in that evidence. In short, this argument is not circular in nature.
vards
B. defies common sense, since
people will not pay for music they can acquire for freeAlthough I did not highlight it, the beginning of this answer choice seems a bit off to me, perhaps a little too casual, or not what I would expect to see on the GMAT™. At any rate, the reason offered for why the argument
defies common sense is directly refuted in the passage. If
music CD sales have actually risen since the
advent of file sharing, then apparently people
will pay for music they can acquire for free. End of story.
vards
C.
fails to specify how much music CD sales have risen since the advent of file sharing
The logic of the argument is that because CD sales have risen since online file sharing began, the claims made by music industry reps to the contrary are false. We do not need an exact figure to qualify the point being made. Sure, such a figure might add weight to the force of the evidence, but this is not the
most vulnerable element of the argument. Eliminate this answer choice and look for an option that stands out among the remaining two.
vards
D.
assumes a causal relationship between variables with a high correlation
without examining other potential factorsThe old
correlation, not causation theme. This makes sense. The argument is built upon a single fact, that CD sales are up since the advent of online file sharing, so music industry reps must be wrong when they claim that online file sharing
hurts their business. There could be any of a number of factors that the argument is
not taking into account that could prove worthy of consideration, such as the possibility that the typical CD-purchasing population has increased significantly since the dawn of file sharing, or, similarly, that the percentage of CD buyers within this demographic has dropped significantly. There are plenty of ways to fill in the blank, but this particular argument points to a single fact and claims proof positive against the claim advanced by the music industry reps.
vards
E. denies the legitimacy of a claim
on the basis of the bias interest of those (music industry representatives) making the claim
Nowhere does the argument mention that those within the music industry have a vested interest in boosting CD sales, so that of course they will claim that such sales are down. Although that is an angle a counterclaim
could take, this argument takes a different angle altogether, looking to present evidence that runs counter to that claim.
There you have it. Since four out of five answer choices can be disproved without too much effort, the clearcut winner is (D). I will admit to treating these questions with care, since I dislike legalese and feel as if many such questions have less to do with reasoning and more to do with specialized vocabulary, but again, these sorts of answer choices pop up frequently in certain GMAT™ question types, so it is probably better to bite the bullet, learn a few terms, and practice.
I hope that helps. If anyone has further questions, I would be happy to discuss this one further.
- Andrew