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Every fall Croton's jays migrate south. The jays always join flocks of

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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 09 Feb 2011, 04:43
C is the best. C strengthens the conclusion that Croton's jays lack navigational skills.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 17 Mar 2011, 17:30
This was hard! especially on the test- i zeroed in on C and E

- 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.

I chose E because this shows that crookbeaks dont join Crotons and the case is reverse as stated. But this is already obvious from the mention of the lost croton wandering around. Hence C by elimination! nasty
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 19 Mar 2011, 05:19
Should be C.

What needs to be strengthened is "Croton's jays lack the navigational ability to find their way south on their own"

Only option C does that
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 25 May 2011, 08:28
No reasoning gap therefore calls for defender answer choice usage.

C does the trick.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 25 May 2011, 10:10
Doesn't the conclusion of this argument state that "Croton's jays lack the navigational ability to find their way SOUTH on their own"?. Option C verifies that they lack navigational ability but not specifically while heading south. I would have chosen option E becuase it rectifies that the jays need help only going south since they are able to fly north on their own.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post Updated on: 30 Sep 2017, 19:07
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Every fall Croton's jays migrate south. The jays always join flocks of migrating crookbeaks with which they share the same 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 nests of crookbeaks, which breed upon completing their southern migration.

(B) The three species 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.

Originally posted by sleepysnowy on 25 Aug 2011, 05:32.
Last edited by hazelnut on 30 Sep 2017, 19:07, edited 1 time in total.
Edited the question.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 25 Aug 2011, 07:28
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Since I'm not a native speaker, I really can't understand the latter part in A "which breed upon completing their southern migration." what does this mean? Appreciated if anyone care to help!!

It means they reproduce after they have completed their journey. i.e have sex and give birth
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 25 Aug 2011, 09:12
nammers wrote:
Since I'm not a native speaker, I really can't understand the latter part in A "which breed upon completing their southern migration." what does this mean? Appreciated if anyone care to help!!

It means they reproduce after they have completed their journey. i.e have sex and give birth


Thanks , I got C the first time but this choice really bothers me. I thought breed upon was a phrase here. Now I understand that upon and breed are separate words.

So crookbeaks will breed after migrating to South and Crotons lay their eggs to take advantage of their breeding period. A may explain why they share the same habitat, but still doesn't explain why crotons would wait till another flock comes.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 25 Aug 2011, 11:49
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DeeptiM wrote:
C talks about Tattersall warblers...which is not even mentioned in the passage...

pls help understand how did you choose C


A term, noun or a premise can be introduced from outside in case of weaken and strengthen type questions. C strengthens the author's conclusion that Croton's jays lack navigational skill to travel south by showing that they don't need crookbeaks for anything else except for the navigation. The hint is provided by showing that Croton's jays follow another species altogether to travel north because they also take them to their destination. The only concern I had was the word "north"; the argument talks about south. However, if we just generalize the conclusion by saying that the jays lack migrating navigation skill altogether, C fits in.

"A" weakens the argument by showing an alternate reason for tailgating. It says; no-no, jays follow crookbeaks because they need a place to usher their eggs, not because they need navigation.

"B" talks about a completely out of scope fact. Croton jays are not even mentioned.

"D" doesn't say anything about Croton's jays. We need to know whether jays need navigation and here's "D", talking about other species that don't concern the problem in hand.

"E" says crookbeaks migrate north in spring. Conclusion is about the lacking navigational skill to travel South. At best, it actually weakens the argument by suggesting that jays will travel north without crookbeaks help. But, who knows if they have some other buddies who can help them get to north; someone like Tattersall warblers. However, we shouldn't assume that.

Ans: "C"
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 25 Aug 2011, 12:34
Here we need to strengthen the conclusion that " Jays lack the navigational ability to find their way to the south".

Option C directly supporting the conclusion by stating that jays depend on another species warbler to migrate migrate north
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 29 Aug 2011, 01:54
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sleepysnowy wrote:
Every fall Croton's jays migrate south. The jays always join flocks of migrating crookbeaks with which they share the same 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 nests of crookbeaks, which breed upon completing their southern migration.- Does it work in any way to strengthen ?
B. The three species most closely related to crookbeaks do not migrate at all.-So what ? does not convey the message, at best left us more confusecd!
C. In the spring, Croton's jays migrate north in the company of Tattersall warblers.- This some ways shows it requires some ones else company to move around- so proabable, keep it
D. Species other than Croton's jays occasionally accompany flocks of migrating crookbeaks.- we are not looking for anything other than C Jay's or are we ?
E. In the spring, crookbeaks migrate north before Croton's jays do.- same reason as D

Since I'm not a native speaker, I really can't understand the latter part in A "which breed upon completing their southern migration." what does this mean? Appreciated if anyone care to help!! - crookbeaks do breeding after migrtaing to south. Anyways this was not any issue I guess while solving the question


So C seems to be the best available option!
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 11 Nov 2011, 11:01
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Here's the explanation:

The conclusion of the given argument is that 'Croton's jays lack the navigational ability to find their way south on their own'. The question asks us to strengthen the argument and hence this conclusion. Which of the given options would prove that the Croton's jays, indeed lack the navigational ability to find their way (south, north or any other direction)?

Option C clearly supports our conclusion by stating that the Croton's jays migrate north in the company of Tattersall warblers and it has already been given in the premise that Croton's jays always join flocks of migrating crookbeaks to travel south. Hence this option, along with the given premise supports the conclusion that Croton's jays indeed lack the navigational ability to find their way.

The other four options are clearly out of scope of the given argument.

Hope this helps.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 27 Dec 2011, 23:33
C is the answer here. Others are out of scope. The navigational ability of the jays is under discussion here and option C strengthens the conclusion that the jays indeed lack that ability.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 31 Dec 2011, 03:01
Every time Jays migrate they need company,which means they lack navigational capacity hence C it is.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 07 Jan 2012, 17:12
C. Process of elimination although I think this question is difficult because C doesn't make complete sense either. I was looking for an answer with jays in general, not Croton's jays.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 30 Apr 2012, 12:36
It is C since the option showed jays lack the skills and have to join with another group.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 02 May 2012, 03:22
The aim here is to show that Croton Jay's can't navigate on their own either in summer or in winter.
In summer, Jay's accompany Crookbeaks whereas in winter Jay's accompany Tattersall warblers.

Option C proves that Croton Jay's lack navigation skills.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 22 May 2012, 12:55
C states that jays need X to migrate to north which supports the conclusion that jays has bad navigation capabilities.
Hence C it is.
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 22 May 2012, 13:45
i got this on the second gprep test. I answered E because this shows that it is indeed crookbeaks who dont need directions. Although C could imply that jays may not need directions but need company, Again since they were talking about northbound flight i ignored this option.

I guess i was wrong! but this question doesnt seem convincing
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Re: Every fall Croton's jays migrate south. The jays always join flocks of [#permalink]

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New post 22 May 2012, 21:05
In the arguement it is mentioned that Jay's fly with crookbeaks when migrating south. When Jay's are left behind for any reasons, they wander till they find another flock of Crrokbeaks that are migrating south.

Option C talks about how Jay's accompany Tattersall warblers while migrating north.

Hence it can be said that Jay's lack navigational skills.
Re: Every fall Croton's jays migrate south. The jays always join flocks of   [#permalink] 22 May 2012, 21:05

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