Bunuel
Coal executive: The majority of individuals within the mountain country of Montania have historically been coal miners. However, many coal mines have closed and the number of coal mining jobs available has decreased by nearly 90%. The best way to get these jobs back is to ensure that demand is at the same level it was before we lost these jobs. Our country must offer subsidies that will allow producers to decrease the price of coal and increase the demand for coal and therefore the need for coal mining jobs in order to recover these lost jobs.
Which of the following, if true, would weaken the coal executive’s argument?
A. Coal is already less expensive per unit than is natural gas within the country of Montania.
B. Many of Montania’s trading partners use a combination of solar and wind power.
C. Montania has invested heavily in retraining programs for former coal miners, many of whom have transitioned to other industries.
D. Improvements in technology have increased the amount of coal that can be produced per worker by 1000%.
E. No new coal deposits have been discovered within Montania for the last fifteen years.
VERITAS PREP OFFICIAL EXPLANATION:
For this weaken question, remember that your job is to understand the stimulus and to "find the gap" in the argument that you've been given and then to find the answer choice that best exploits that gap.
The coal executive argues that the number of coal mining jobs has declined by 90% and that the best way to return the number of jobs back to the number before the decline is to decrease the cost per unit of coal (thereby increasing demand). There are a number of gaps here. Is there any proof that declining demand is what caused the decline in jobs? What about proof that increasing the demand will necessarily increase the number of jobs (maybe the workers who are there are currently underproducing)?
Only (D) exploits one of these gaps: there is no proof that a decline in demand is what caused the decrease in the number of mining jobs in the first place. If now a single worker can produce 1000% (or ten times) what a worker before the decline could produce, then it would take only 10% of the number of workers to produce the same output. Since decreased demand isn't the cause of the decrease in the number of workers, increasing the demand won't increase the number of available jobs to what it once was.
Among the other answer choices, (A) can be eliminated because it is unknown how the relationship between the costs of coal and natural gas would affect demand. Choice (B) can also be eliminated because even though many of Montania's trading partners use wind and solar, you don't know that a) they use these technologies to the exclusion of coal or that b) they haven't always used wind and solar instead of coal. They may have always traded salt with Montania rather than coal.
Choice (C) can also be eliminated, and for a very common reason: it doesn't factor in to the explicitly stated goal While job retraining might be a better plan for laid-off miners and for the economy as a whole, those very worthy causes are not mentioned as part of the executive's goal. The goal is stated as "in order to recover these lost jobs" (where "these" refers to "coal"). The executive is concerned with coal jobs, not with jobs in general, so (C) is a nonfactor.
Finally, (E) can be eliminated because even though no new coal deposits have been discovered in the last 15 years, you don't know that the existing coal deposits have been exhausted. So while the country could be running out of coal deposits, it could also have enough coal to last it for several generations.