A
People with abnormally low concentrations of the photopigments for perceiving red can perceive fewer shades of red than people with normal concentrations.
B
Questions that ask subjects to distinguish between different shades of the same color are difficult to phrase with complete clarity.
C
Some people are uninterested in fine gradations of color and fail to notice or report differences they do not care about.
D
Some people are unable to distinguish red from green due to an absence in the retina of the photopigment sensitive to green.
E
Some people fail to report distinctions between certain shades of red because they lack the names for those shades.
At many electronics retail stores, the consumer has the option of purchasing product warranties that extend beyond the manufacturer’s warranty. However, consumers are generally better off not buying extended warranties. Most problems with electronic goods occur within the period covered by the manufacturer’s warranty.
Summarize Argument
Consumers shouldn’t buy extended warranties for electronics. Most issues with electronics happen within the normal warranty’s coverage period.
Notable Assumptions
The author assumes that the issues which tend to occur after the normal warranty period expires are not far more costly to fix than simply paying for the extended warranty. In extension, the author assumes that there isn’t some other benefit for extended warranties that makes them worth it.
A
Problems with electronic goods that occur after the manufacturer’s warranty expires are generally inexpensive to fix in comparison with the cost of an extended warranty.
This strengthens the argument. It strengthens the author’s assumption that the issues which tend to occur after the normal warranty period expires are not more costly to fix than simply paying for the extended warranty.
B
Because problems are so infrequent after the manufacturer’s warranty expires, extended warranties on electronic goods are generally inexpensive.
This weakens the argument. It says that the extended warranties are not costly, suggesting that purchasing one may not be as big of a loss as the author implies. If extended warranties are cheap, the amount that one is “generally better off” is reduced.
C
Most of those who buy extended warranties on electronic goods do so because special circumstances make their item more likely to break than is usually the case.
This does not affect the argument. The author says that consumers generally should not buy extended warranties—this implies that there may be a small minority of consumers who actually do benefit from the purchase.
D
Some extended warranties on electronic goods cover the product for the period covered by the manufacturer’s warranty as well as subsequent years.
This does not affect the argument. This is not really new information—the argument already describes extended warranties as “warranties that extend beyond the manufacturer’s warranty.”
E
Retail stores sell extended warranties in part because consumers who purchase them are likely to purchase other products from the same store.
This does not affect the argument. Our concern is not with how stores benefit from selling extended warranties, but how consumers benefit from purchasing them.
Detailed Explanation
We’ve got a Strengthen question, which we can tell from the question stem: Which one of the following, if true, most strengthens the argument?
We start out with a bit of context that introduces us to two types of warranties: standard manufacturer’s warranties and extended warranties (those warranties that extend coverage past the end of a manufacturer’s warranty). We then get a shift word (“however”) that moves us from context into our argument. The argument begins with its conclusion: consumers are better off not buying the extended warranties. That’s followed by our one and only premise: most problems with the covered items occur within the time period covered by the standard manufacturer’s warranty. The implication here is that consumers are less likely to run into issues with their devices after the period that is covered by the standard warranty. Therefore, they should forego the additional expense of an extended warranty. This stimulus is a cost-benefit analysis. We are comparing two options (the warranties) and deciding between them based on the pros (benefits) and cons (costs) associated with each one.
The argument is premised upon a quantitative comparison; that is, our premise is comparing the number of problems that occur during the standard warranty with the number of problems that might occur during the extended warranty. Oftentimes an argument premised upon a quantitative comparison will omit a qualitative comparison thus leaving a fairly large gap in the argument. This is particularly true in questions that involve a cost-benefit analysis like we have here. In cases like these, ask yourself how would a qualitative comparison (in this case something based on the quality of the problems instead of the number of problems) potentially impact the argument. For instance, if you were choosing between two airlines and both tickets cost the same, but Airline A had more delays than Airline B, it probably seems like a no-brainer to choose Airline B. But what if Airline A’s delays lasted 5-10 minutes on average whereas Airline B’s delays clocked it in at around 5 hours. Might this shift your thinking? It would shift mine! This is an example of relevant information that a qualitative comparison can bring to a cost benefit analysis.
In this case, we know that there are more issues during the standard warranty period, but what types of issues are they? What if most issues that occur during the standard warranty period are relatively minor and inconsequential–things that you might not even consider getting repaired if your electronic device wasn’t under warranty. Whereas, issues that arise during the extended period are often major issues that prevent you from using your device and would cost you enormous amounts of money if the device were not under warranty. Now we have a reason why that quantitative comparison might not be the only thing you want to consider. Because this is a strengthening question, we should be on the lookout for an answer choice that might tell us something about the quality of the incidents that occur during the two warranty periods. With this all in mind, let’s move to the answer choices:
Correct Answer Choice (A) Perfect! This answer fills in a potential weakness that we identified in our analysis of the stimulus. It tells us that the problems that occur during extended warranties are on par with those that occur during the extended warranty period. This strengthens the conclusion that consumers ought to forego the extended warranty.
Answer Choice (B) This answer choice does nothing to strengthen our argument. If anything it weakens our argument by giving us a reason why we might want to purchase an extended warranty: they aren’t that expensive.
Answer Choice (C) This AC is consistent with our argument. Our conclusion is that consumers would be generally better off without an extended warranty. This gives us a reason why a segment of the population does buy extended warranties—they have extenuating circumstances that increase the likelihood that their devices will break. This neither strengthens or weakens our argument which is directed towards the average consumer.
Answer Choice (D) This answer choice is playing on the assumption that an extended warranty would be an unnecessary expense because some extended warranties include some time that would already be covered by standard warranties. This doesn’t really do anything to our argument and is ultimately irrelevant.
Answer Choice (E) This is telling us why stores sell extended warranties but we are only concerned with whether or not consumers should buy them. Just because they may be a lucrative service for stores to offer doesn’t make them more or less useful to consumers.
The question stem reads: The argument's reasoning is flawed because of the argument… This is a Flaw question.
The author describes how since the 1970s, environmentalists have successfully gotten lawmakers to enact extensive environmental regulations. However, the author also notes that the environment has not improved; it has gotten worse. The author concludes that more environmental regulations are not the solution to the problem. The author believes that because the environment is worsening, the regulations must not positively affect the environment. In other words, the regulations are not causing the environment to get better.
However, we do not know all of the problems affecting the environment. It is possible that the regulations positively impact the environment, but the positive impacts are overshadowed by the other events harming the environment. Imagine we enacted environmental regulations to ban disposable straws. At the same time, we doubled the amount of coal-fired electricity plants. The straw regulations have a positive effect, saving many tortoises, but the harm caused by the coal outpaces the positive effects of the straw regulation. The author would argue that more regulations are not the solution, but we could easily say that we need to regulate the coal-fire-powered plants. So the author has failed to consider that there might be other events causing harm to the environment.
Answer Choice (A) is incorrect because it is not our identified causation flaw. There is no attack on the environmentalists. In fact, he uses their own words to lend credibility to his argument.
Answer Choice (B) is not presumed the by the author. At no point does the author's argument presume zero regulations are required to prevent environmental degradation can be prevented. The author could say that the regulations are simply ineffective and that whether we have them makes no difference to the environment.
Correct Answer Choice (C) is what we paraphrased. The author does fail to consider the possibility that the regulations are having a positive effect. Without the positive effects of the regulations, the environment could have gotten worse.
Answer Choice (D) is not presumed by the argument. The author does not claim reducing regulation is more important than protecting the environment.
Answer Choice (E) is wrong. While the author does not consider the view of the environmentalist's opponents, that is not the argument's flaw.