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Croton's Jays

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Croton's Jays

by sk8ternite » Fri Aug 21, 2009 1:54 pm
Every fall Croton's jays migrate south. The jays always join flocks of migrating crookbeaks with which they share the summer and winter territories. If a jay becomes separated from the crookbeaks it is accompanying, it wanders until it comes across another flock of crookbeaks. Clearly, therefore, Croton's jays lack the navigational ability to find their way south on their own.

Which of the following, if true, most strengthens the argument above?
A - Croton's jays lay their eggs in the nest of crookbeaks, which breed upon completing their southern migration.
B - The three species of most closely related to crookbeaks do not migrate at all.
C - In the spring, Croton's jays migrate north in the company of Tattersall warblers.
D - Species other than Croton's jays occasionally accompany flocks of migrating crookbeaks.
E - In the spring, crookbeaks migrate north before Croton's jays do.
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by pandeyvineet24 » Fri Aug 21, 2009 1:57 pm
Should be C
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by sk8ternite » Fri Aug 21, 2009 2:05 pm
Rather than just stating the answer, please provide a little insight into how you arrived at your answer
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by pandeyvineet24 » Fri Aug 21, 2009 2:22 pm
sk8ternite wrote:Rather than just stating the answer, please provide a little insight into how you arrived at your answer

sk8ternite, this is how i got C.
The conclusion is " Clearly, therefore, Croton's jays lack the navigational ability to find their way south on their own."
actually, the only answer that talks about the navigational qualities of Croton's jays is C.
When these birds fly north, they do so in the company of other birds.

rest all of options are out of scope.
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Re: Croton's Jays

by gmatmachoman » Fri Aug 21, 2009 8:00 pm
sk8ternite wrote:Every fall Croton's jays migrate south. The jays always join flocks of migrating crookbeaks with which they share the summer and winter territories. If a jay becomes separated from the crookbeaks it is accompanying, it wanders until it comes across another flock of crookbeaks. Clearly, therefore, Croton's jays lack the navigational ability to find their way south on their own.

Which of the following, if true, most strengthens the argument above?
A - Croton's jays lay their eggs in the nest of crookbeaks, which breed upon completing their southern migration.----OUT OF SCOPE


B - The three species of most closely related to crookbeaks do not migrate at all.---OUT OF SCOPE

C - In the spring, Croton's jays migrate north in the company of Tattersall warblers.--REASON:AFTER REACHING DOWN SOUTH,THE JAYS HAS TO TRAVERSE BACK NORTH.IF THEY HAVE THEIR OWN CAPABILITY THEY COULD DO IT ALONE WITHOUT TAKING THE COMPANY OF TATTERSALL BUT THEY HAVEN'T.SO THIS SUPPORTS THE ARGUMENT THAT JAYS CANT MIGRATE ALL ALONE.

D - Species other than Croton's jays occasionally accompany flocks of migrating crookbeaks.----OUT OF SCOPE
E - In the spring, crookbeaks migrate north before Croton's jays do.---SO WHAT--OUT OF SCOPE
ONE MORE FOR C
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by tanviet » Wed Aug 03, 2011 8:33 pm
we need only 1 minute to read argument and eliminate 3 answer choices. When there are only 2 choice left, we need 30 seconds to 90 second for the last 2 choices.

C and E are left.

E is brutal. E partly restates evidence that the crock can navigate. C is correct.

RESTATE EVIDENCE IS WRONG AND BRUTAL FOR ASSUMPTION, STRENGTHENING QUESTIONS
CONTRADICT EVIDENCE IS WRONG AND BRUTAL FOR WEAKENING QUESTIONS.
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by shankarh2011 » Wed Aug 03, 2011 9:00 pm
First three sentences are the premises and the last sentence is the conclusion of the argument.
Conclusion states that Croton's jays lack navigational abilities to migrate on their own towards south. So something that strengthens the conclusion would be more like supporting it.
Choice A is out of scope since it doesnt talk about navigational abilities,
Choice B does not talk about jays hence out of scope
Choice C seems right because it talks about crotons jays moving north with tatersall. This shows jays cannot move alone north and supports conclusion
Choice D out of scope since doesnt talk about jays
Choice E so what ?
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by [email protected] » Tue Jul 23, 2013 1:10 pm
I am opening a previous post.

I marked the answer as E with the reasoning that since the crookbeaks move before, the Croton Jay's can follow them. I understand that C is a very strong contender but how do I eliminate E?
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by [email protected] » Tue Jul 23, 2013 1:54 pm
Hi nishatfarhat87,

Consider what the Focus of the prompt is: The Croton Jay. The answer would have to address the Croton Jay to be correct. Answer C talks about the Croton Jay and how it travels in another direction with a bird (this supports the idea that the Croton Jay needs another bird's help to travel). Answer E shifts to the crookbeak and tells us that the crookbeaks leave before the Croton jays do (but it doesn't tell us WHY - it doesn't link the Croton jay's need for help to another bird, it just tells us who leaves first).

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