Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 25 May 2017, 00:56

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

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

Author Message
TAGS:

### Hide Tags

Senior Manager
Status: D-Day is on February 10th. and I am not stressed
Affiliations: American Management association, American Association of financial accountants
Joined: 12 Apr 2011
Posts: 266
Location: Kuwait
Schools: Columbia university
Followers: 5

Kudos [?]: 307 [0], given: 52

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

### Show Tags

11 Nov 2011, 07:14
3
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

74% (02:16) correct 26% (02:31) wrong based on 246 sessions

### HideShow timer Statistics

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 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?

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.

[Reveal] Spoiler: OA

_________________

Sky is the limit

If you have any questions
New!
Manager
Status: Enjoying the MBA journey :)
Joined: 09 Sep 2011
Posts: 137
Location: United States (DC)
Concentration: General Management, Entrepreneurship
GMAT 1: 710 Q49 V38
WE: Corporate Finance (Other)
Followers: 19

Kudos [?]: 122 [2] , given: 16

### Show Tags

11 Nov 2011, 11:01
2
KUDOS
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.
_________________

MBA Candidate 2015 | Georgetown University

BSchool Forum Moderator
Status: Flying over the cloud!
Joined: 17 Aug 2011
Posts: 886
Location: Viet Nam
GMAT Date: 06-06-2014
GPA: 3.07
Followers: 74

Kudos [?]: 656 [0], given: 44

### Show Tags

13 Nov 2011, 01:21
+ 1 for C
_________________

Rules for posting in verbal gmat forum, read it before posting anything in verbal forum
Giving me + 1 kudos if my post is valuable with you

The more you like my post, the more you share to other's need

CR: Focus of the Week: Must be True Question

Senior Manager
Joined: 12 Oct 2011
Posts: 266
Followers: 0

Kudos [?]: 50 [0], given: 110

### Show Tags

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.
_________________

Consider KUDOS if you feel the effort's worth it

Director
Joined: 28 Jul 2011
Posts: 550
Location: United States
GPA: 3.86
WE: Accounting (Commercial Banking)
Followers: 3

Kudos [?]: 238 [0], given: 16

### Show Tags

28 Dec 2011, 17:32
+1 C
_________________

Manager
Joined: 08 Aug 2011
Posts: 199
GPA: 3.5
Followers: 1

Kudos [?]: 14 [0], given: 51

### Show Tags

31 Dec 2011, 03:01
Every time Jays migrate they need company,which means they lack navigational capacity hence C it is.
Manager
Status: Bunuel's fan!
Joined: 08 Jul 2011
Posts: 233
Followers: 1

Kudos [?]: 47 [0], given: 55

### Show Tags

30 Apr 2012, 12:36
It is C since the option showed jays lack the skills and have to join with another group.
Senior Manager
Joined: 13 Mar 2012
Posts: 360
Concentration: Operations, Strategy
Followers: 2

Kudos [?]: 175 [0], given: 31

### Show Tags

01 May 2012, 01:51
With C..............!!!!!!
_________________

Practice Practice and practice...!!

If there's a loophole in my analysis--> suggest measures to make it airtight.

Manager
Joined: 02 Jan 2011
Posts: 197
Followers: 1

Kudos [?]: 53 [0], given: 22

### Show Tags

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.
Manager
Joined: 12 Mar 2012
Posts: 167
Location: India
Concentration: Technology, General Management
GMAT Date: 07-23-2012
WE: Programming (Telecommunications)
Followers: 0

Kudos [?]: 56 [0], given: 4

### Show Tags

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.
_________________

FOCUS..this is all I need!

Ku-Do!

GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10368
Followers: 997

Kudos [?]: 225 [0], given: 0

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

### Show Tags

16 Dec 2015, 15:41
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Re: Every fall Croton's jays migrate south. The jays always join   [#permalink] 16 Dec 2015, 15:41
Similar topics Replies Last post
Similar
Topics:
1 Jay: We have too many people working on each 9 14 May 2017, 15:14
Jay: We have too many people working on each of our computers in the 1 25 Apr 2017, 04:20
7 Every fall Croton's jays migrate south. The jays always join 14 16 Jan 2017, 11:41
24 In 1998, more citizens from the country of Monrovia migrated 22 14 Nov 2016, 16:34
12 Every fall Croton's jays migrate south. The jays always join 46 16 May 2015, 04:46
Display posts from previous: Sort by