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A
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Difficulty:
55%
(hard)
Question Stats:
63% (01:49) correct
37%
(02:15)
wrong
based on 7953
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People who have spent a lot of time in contact with animals often develop animal-induced allergies, some of them quite serious. In a survey of current employees in major zoos, about 30 percent had animal-induced allergies. Based on this sample, experts conclude that among members of the general population who have spent a similarly large amount of time in close contact with animals, the percentage with animal-induced allergies is not 30 percent but substantially more.
Which of the following, if true, provides the strongest grounds for the experts’ conclusion?
(A) A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.
(B) A zoo employee is more likely than a person in the general population to keep one or more animal pets at home.
(C) The percentage of the general population whose level of exposure to animals matches that of a zoo employee is quite small.
(D) Exposure to domestic pets is, on the whole, less likely to cause animal induced allergy than exposure to many of the animals kept in zoos.
(E) Zoo employees seldom wear protective gear when they handle animals in their care.
Similar Inference question from GMAT Prep is HERE.
Which of the following, if true, provides the strongest grounds for the experts’ conclusion?
(A) A zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.
(B) A zoo employee is more likely than a person in the general population to keep one or more animal pets at home.
(C) The percentage of the general population whose level of exposure to animals matches that of a zoo employee is quite small.
(D) Exposure to domestic pets is, on the whole, less likely to cause animal induced allergy than exposure to many of the animals kept in zoos.
(E) Zoo employees seldom wear protective gear when they handle animals in their care.
Similar Inference question from GMAT Prep is HERE.
28 Apr 2008, 14:28
Kudos
Bookmarks
saravalli
The key to this claim is that on the one hand, you have zoo employees and on the other, exposed members of the general population. (A) says that if allergic zoo employees (ie 100% allergic rate) switch to other jobs, then the percentage of exposed people (ie 30% allergic rate) who are allergic must be higher (ie a blended rate somewhere between 30% and 100%).
30 Apr 2008, 09:35
Kudos
Bookmarks
I get A as well.
Conclusion:
"experts conclude that among members of the general
population who have spent a similarly large amount of time in close contact
with animals, the percentage with animal-induced allergies is not 30 percent
but substantially more."
In other words, a higher percentage of the general population will have animal-induced allergies. We need to strengthen this conclusion be selecting the answer that provide a reason why more people in the general population would have these animal-induced allergies.
A. This statement tell us that once people develop these allergies in the Zoo profession they switch to the general population. So the animal exposed general population should be at 30% plus the additional ex-Zoo workers which should make it higher. Correct
B. This is irrelevant because we are not concerned about the general population as a whole but instead only those in the general population who are exposed as much as Zoo workers. Even if it was relevant it would provide evidence that Zoo workers should have a higher rate of allergies and would weaken not strengthen.
C. This is irrelevant as well because were dealing with percentages.
D. As in B this would provide evidence that Zoo workers should be more exposed and weakens not strengthens.
E. This would also provide evidence to weaken and not strengthen.
Conclusion:
"experts conclude that among members of the general
population who have spent a similarly large amount of time in close contact
with animals, the percentage with animal-induced allergies is not 30 percent
but substantially more."
In other words, a higher percentage of the general population will have animal-induced allergies. We need to strengthen this conclusion be selecting the answer that provide a reason why more people in the general population would have these animal-induced allergies.
A. This statement tell us that once people develop these allergies in the Zoo profession they switch to the general population. So the animal exposed general population should be at 30% plus the additional ex-Zoo workers which should make it higher. Correct
B. This is irrelevant because we are not concerned about the general population as a whole but instead only those in the general population who are exposed as much as Zoo workers. Even if it was relevant it would provide evidence that Zoo workers should have a higher rate of allergies and would weaken not strengthen.
C. This is irrelevant as well because were dealing with percentages.
D. As in B this would provide evidence that Zoo workers should be more exposed and weakens not strengthens.
E. This would also provide evidence to weaken and not strengthen.
