Deer mice normally do not travel far from their nests, and : GMAT Critical Reasoning (CR)
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# Deer mice normally do not travel far from their nests, and

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Deer mice normally do not travel far from their nests, and [#permalink]

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11 Jun 2010, 10:33
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64% (03:16) correct 36% (01:52) wrong based on 45 sessions

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Deer mice normally do not travel far from their nests, and deer mice that are moved more than half a kilometer from their nests generally never find their way back. Yet in one case, when researchers camped near a deer mouse nest and observed a young deer mouse for several weeks before moving it to an area over two kilometers away, the deer mouse found its way back to its nest near their camp in less than two days.
Which one of the followings, if true, most help to explain how the deer mouse might have found its way back to its nest?
(A) The area to which the deer mouse was moved was dryer and more rocky than the area in which its nest was located.
(B) The researchers released the deer mouse in a flat area across which their campfire smoke drifted.
(C) There were very few deer mice in the area to which the deer mouse was moved.
(D) The researchers had moved the deer muse in a small dark box, keeping the mouse calm before it was released.
(E) Animals that prey on deer mice were common in the area to which the deer mouse was moved.
[Reveal] Spoiler: OA

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Re: Deer mice normally do not travel far from their nests, and [#permalink]

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11 Jun 2010, 11:18
This is a real tough one.

IMO E, the only reasoning that I can think of is that predator animals might have driven the deer mice back to its nest.

What is the OA ?
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11 Jun 2010, 11:38
shaneforu wrote:
This is a real tough one.

IMO E, the only reasoning that I can think of is that predator animals might have driven the deer mice back to its nest.

What is the OA ?

Try again.
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11 Jun 2010, 11:40
I struggled between B and E.

but I pick B.

If campers observed the mouse for several weeks then the mouse was used to of the campfire smoke and that smoke which drifted in the flat area where the mouse was released helped the mouse get back to its nest.

(B) The researchers released the deer mouse in a flat area across which their campfire smoke drifted.

What is the OA?
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12 Jun 2010, 03:28
This is a tough one... I go with D though I have to admit that I'm not sure whether it's right or not.

What's the OA?
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Re: Deer mice normally do not travel far from their nests, and [#permalink]

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12 Jun 2010, 06:32
Can be B. I guess i did not read all options correctly (or may be I read another solution )

but B seems to have some connection between the Mice's old location & new location, which the mouse mice might have used. I guess.......

Would really be interested in the answer & the reasoning.

Thanks
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12 Jun 2010, 07:05
Damm this one is tough!.... my vote is on B......

OA please and yes would be helpful if you can also mention the source......
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13 Jun 2010, 23:31
Is it A?

whats the OA
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13 Jun 2010, 23:45
IMO B. Really tough one. What is oa?
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14 Jun 2010, 01:27
i choose B.
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14 Jun 2010, 02:27
OA, OA OA
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14 Jun 2010, 02:50
The first premise explains the general behavior of the deer mice while the second premise mentions a particular instance where the contrast happened.

Now we need to find something which explains the unusual behavior. This would be possible is we establish that the conditions were not general. They were specifically different in this scenario.

What difference that the stimulus points to?
It points that the scientists camped near the area, which does not seem very usual. So an answer choice which hints this variation as a reason for the behavior could be true.

I think I will go with B.

Please correct me if I'm wrong
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14 Jun 2010, 03:09
IMO B QA plz ?
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14 Jun 2010, 07:01
Its mentioned that mice cant travel too much, thats why if they travel much, they probably lose stamina so cant get back. Now if the selected mouse was relaxed in a dark place (like its nest), it would have been able to come back.

Funny??? but this is my take. So "D" for me.
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21 Jan 2011, 12:47
OA
[Reveal] Spoiler:
B

I have seen it before.
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21 Jan 2011, 15:48
I was debating between B and E. B requires the assumption that the Deer mouse will be able to recognize the campfire smoke to get back to the nest. On the other hand, E does not explain how the mouse will find its original nest. Thus, I pick B.
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21 Jan 2011, 17:39
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i pick the right answer but after 4 minutes..........but is clear.
A mouse far way from its nest is unable to find it because (hypothesis) is hidden by something: trees, rock and so on; in sum: hasn't a landmark.

The smoke is this landmark: the only logic way to explain this
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Last edited by carcass on 22 Jan 2011, 11:00, edited 1 time in total.
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22 Jan 2011, 07:52
B seems to be the only possible solution
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24 Jan 2011, 11:07
Debated between A and B, but chose B as it says about flat area and smoke
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Re: Deer mice normally do not travel far from their nests, and [#permalink]

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24 Jan 2011, 11:29
IMO B.
I think that this is a really simple one. In the question it is stated that usually if mice are moved more than a kilometer away from their nest the mice can't find their way home. The question states that in one case researches CAMPED near the mice nest. In this case the researches moved the mice 2 kilometers away BUT the mice managed to find the way back home. WHY? The only possible explanation to this is that the mice used the fact that the researches CAMPED near the mice nest helped the mice to find the way back home.
The only answer that includes this is B.
Re: Deer mice normally do not travel far from their nests, and   [#permalink] 24 Jan 2011, 11:29

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