Bunuel
A local councilman has proposed a “sin tax” on alcoholic beverages served in area bars. The councilman believes that since the amount of the tax alone will exceed the cost of most non-alcoholic beverages, many people will switch from alcohol to other beverages.
Which of the following statements, if true, would most clearly indicate a vulnerability in the councilman’s argument?
A. Both beer and hard liquor will be taxed under the councilman’s proposal.
B. The cost of alcoholic beverages is already considerably higher than that of any non-alcoholic beverage.
C. Many people abstain from alcohol for moral or religious reasons.
D. The “sin tax” should apply to cigarettes instead because smoking causes more preventable deaths than does alcohol.
E. Many bar patrons consume more alcohol on days when they are paid.
KAPLAN OFFICIAL EXPLANATION:
Identify the Question Type:The word "vulnerability" at first might signal that this is a Flaw question. However, the question wants to know which of the answer choices, if true, would show that vulnerability. Since the choices are statements that add something new, and the question is about the effect of those statements on the argument, this is a Weaken question.
Untangle the Stimulus:The councilman's conclusion is hinted by the keywords, "the councilman believes that." However, what comes immediately after that is not the conclusion, but the entire argument, starting with the evidence. This stimulus contains a very common structure: Since A, B. “Since” is a keyword for evidence, so what comes immediately after it is evidence. But the evidence only continues up to the comma. What comes after the comma is the conclusion. In this case, the conclusion is that many people will switch from alcohol to other beverages. The evidence, then, is that the amount of the new “sin tax” is itself greater than the cost of most non-alcoholic beverages.
Predict the Answer:Why does the councilman think a huge tax will convince the drinkers of alcohol to switch? The councilman must be assuming that cost is an important, if not the primary, factor drinkers consider when ordering drinks.
A weakener attacks the assumption of the argument, making the conclusion less likely to follow from the evidence. Here, the answer will be a statement that makes it less likely that the cost of the tax will make people switch to non-alcoholic drinks. It will suggest that the relative costs of alcoholic versus non-alcoholic beverages is not so important to alcohol drinkers. Usually a general prediction like this is all that's possible with weaken or strengthen questions. Since the choices are stating new information, there is usually no way of knowing what the test-maker will come up with. Keep the general prediction in mind when going through the choices, and the answer will stand out.
Eliminate the Wrong Answer Choices:(B) is correct, conforming to the general prediction. If the cost of alcoholic beverages is already considerably higher than that of any non-alcoholic beverage, then the price difference didn't seem to dissuade people in the first place. People were already paying a much higher price for alcoholic beverages, which makes it less likely they will be swayed to switch drinks by an additional tax.
(A) is irrelevant. It clarifies the types of beverages being taxed, but says nothing to make it less likely that the drinkers of such beverages will switch to non-alcoholic beverages.
(C) is out of scope. People who do not drink alcohol will not be affected by the councilman’s proposal. The argument concerns the effect of the new tax on those who do drink alcoholic beverages.
(D) is out of scope. Cigarettes have absolutely no bearing on this argument, which is only concerned with the effect of a new tax on alcohol. Don't lose sight of the argument's evidence and conclusion!
(E) is a 180. If people drink more alcohol on payday, this suggests that perhaps the cost of alcohol is a factor in their decision to choose alcohol over non-alcoholic beverages. The councilman’s proposal would then be strengthened.
TAKEAWAY: With Weaken questions, be clear on the evidence and conclusion, and then pick the choice that makes it less likely that the conclusion follows from that evidence.