Zoos have served both as educational resources and as entertainment. Unfortunately, removing animals from their natural habitats to stock the earliest zoos reduced certain species' populations, endangering their survival. Today most new zoo animals are obtained from captive breeding programs, and many zoos now maintain breeding stocks for continued propagation of various species. This makes possible efforts to reestablish endangered species in the wild.Which one of the following statements is most strongly supported by the information above?
Answer(s): B
This is an Inference question. Because the right answer must be supported by statements in the passage, you should avoid answer choices using extreme language. There usually won't be enough information in the passage to support choices that speak in terms of "all" or "every" or "never". Only option [Some specimens of endangered species are...] is supported by the passage, specifically the last two sentences of the paragraph.The stimulus tells us that zoos maintain breeding stocks for continued propagation of various species, and that this makes possible efforts to reestablish endangered species in the wild. Therefore, you can infer that some (though not all, or even most) specimens of endangered species are born and bred in zoos.
Only a very small percentage of people from the service professions ever become board members of the 600 largest North American corporations. This shows that people from the service professions are underrepresented in the most important corporate boardrooms in North America.Which one of the following points out a flaw committed in the argument?
As soon as you see percentages being discussed, you should pay close attention. And since the question stem tells you that there is a flaw in the argument, it's a good bet that the author is going to confuse the numbers in some way. The author concludes that people from the service professions are underrepresented in boardrooms because only a very small percentage of people from the service professions ever become board members of the largest corporations. Well, that doesn't make much sense. There are probably millions of people in any industry you can think of, including the service industry; but there are only a few people (relatively speaking) that are board members of the largest corporations. So by the author's reasoning, virtually every industry would be underrepresented. Therefore, the author's conclusion doesn't logically follow from the evidence. Option [The percentage of people from the service professions] correctly identifies this flaw; it points out that the way you tell whether a group is Underrepresented is to look at the percentage of board members who come from a particular group -- not by looking at what percentage of the group become board members.Once you have identified this fundamental flaw, none of the other answer choices should have distracted you.Note that options [It is a mistake to take the 600 largest...], [It is irrelevant to smaller corporations whether...] and [The presence of people from the service professions on...] have outside the scope elements, namely, corporate boardrooms generally, smaller corporations, and social responsibility.
If there are any inspired musical performances in the concert, the audience will be treated to a good show. But there will not be a good show unless there are sophisticated listeners in the audience, and to be a sophisticated listener one must understand one's musical roots.If all of the statements above are true, which one of the following must also be true?
Answer(s): A
This Inference question clearly has a formal logic feel to it, so you can bet that you'll need to know your contrapositives to find the correct answer. Here's the chain of statements: Inspired musical performances guarantee a good show. So IMP--> GS. But there won't be a good show unless there are sophisticated listeners. "X cannot be true unless Y" is logically equivalent to "X implies Y," and so the second statement means that if there is a good show, there must be sophisticated listeners. Combining this with the first sentence gives us IMP --> GS --> SL. Now, being a sophisticated listener requires one to know one's musical roots. So if there are sophisticated listeners out there, they must understand their musical roots. Throwing this in gives us IMP --> GS --> SL --> UMR. From here, many statements are deducible.
Columnist: A recent study suggests that living with a parrot increases one's risk of lung cancer. But no one thinks the government should impose financial impediments on the owning of parrots because of this apparent danger. So by the same token, the government should not levy analogous special taxes on hunting gear, snow skis, recreational parachutes, or motorcycles.Each of the following principles is logically consistent with the columnist's conclusion EXCEPT:
Answer(s): C
The stem tells us we need to find the principle that's inconsistent (i.e., logically conflicts) with the columnist's conclusion. So the first step is to identify that conclusion. The Keyword "so" signals the conclusion: we shouldn't apply taxes on a bunch of things connected to dangerous activities. What choice contradicts this conclusion? Only option [The government should create financial disincentives to...], according to which, we should use financial incentives (like taxes) to discourage dangerous activities (like parachuting, etc.).
Scientist: Some critics of public funding for this research project have maintained that only if it can be indicated how the public will benefit from the project is continued public funding for it justified. If the critics were right about this, then there would not be the tremendous public support for the project that even its critics acknowledge.If the scientist's claims are true, which one of the following must also be true?
Answer(s): E
This one's tricky, and might have been a good candidate to skip during your first pass through the section. It's an Inference question, a kind that's typically not vulnerable to prephrasing, and it has a formal logic element jumbling together the terms "some," "only," "not," and the hypothetical "if." Eeek! Surely no picnic. But there is a clever way into this, and it involves working backwards, beginning at the end. That's where the most concrete information appears, so it makes sense to note that and work from there. Here's what we know: There is public support for the project; the critics acknowledge it. "If the critics were right about this" (referring to something that comes earlier), then there would NOT be support. But there is support, so guess what? The critics must be wrong. About what? About "this." What's "this"? It's what the critics "maintain" in the first sentence: Public funding for the project is justified only if the public can see the benefit. In other words, the critics believe that the public seeing the benefit is required for public funding to be justified -- the "only if" tells us that. And if the critics are wrong in thinking so, as we deduced above from the latter part of the stimulus, then the public seeing a benefit is NOT required for the justification of the public funding.
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