Birds : GMAT Verbal Section
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# Birds

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18 Aug 2006, 17:14
Each year red-winged blackbirds stop in a certain region of Midland Province on their spring and fall migrations. In the fall, they eat a significant portion of the provinceâ€™s sunflower crop. This year Midland farmers sought permits to set out small amounts of poisoned rice during the blackbirdsâ€™ spring stop in order to reduce the fall blackbird
population. Some residents voiced concern that the rice could threaten certain species of rare migratory birds. Nevertheless, the wildlife agency approved the permits.

Which of the following, if true, most helps to justify the wildlife agencyâ€™s approval of the permits, given the concerns voiced by some residents?

A. In the region where the red-winged blackbirds stop, they are the first birds to be present in the spring.
B. The poison that farmers want to use does not kill birds but rather makes them incapable of producing viable eggs.
C. Since rice is not raised in Midland Province, few species of birds native to the province normally eat rice.
D. Without the permit, any farmers shown to have set out poison for the blackbirds would be heavily fined.
E. The poison that farmers got approval to use has no taste or smell that would make it detectable by birds.
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18 Aug 2006, 18:15
It must be A.

B: This threatens the migratory birds
C: The argument is about migratory birds not native birds.
D: Doesn't get anywhere with this. A long shot can be that the wild life agency would have the ultimate say and can revoke all the permits at once,
but it needs a lot of evidence, if it is.
E: This too threatens the migratory birds.

A targets only the blackbirds, which is why the wild life agency would allow the permits.
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18 Aug 2006, 18:34
I think this is A as well

B... argument isn't saying anything about killing, just threatening... which could be achieved with this, thus weaken the idea of permits

C D and E are out of scope
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18 Aug 2006, 23:45
Slam dunk (A) here. The blackbirds will gobble up most of the poisoned rice pellets first, thereby reducing the threat of contaminating the other endangered species.

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19 Aug 2006, 13:50
Doesn't get easier than this - clear A
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19 Aug 2006, 18:26
Easy A.
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19 Aug 2006, 18:32
But (A) still leaves the possibility that other birds will consume the poisonous rice left after the blackbirds consumed parts of it.
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19 Aug 2006, 18:52
sperinko wrote:
But (A) still leaves the possibility that other birds will consume the poisonous rice left after the blackbirds consumed parts of it.

That is true. However, we must assume that province`s sunflower crops are of high value, hence the thought of killing any living creatures (blackbird included.) Opportunity cost decision.
19 Aug 2006, 18:52
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