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Monarch butterflies, whose average life span is nine months,

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Re: CR: monarch butterflies [#permalink]

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New post 14 Jan 2010, 11:08
I went for D. but reading the explanations I think B makes more sense.

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Re: CR: monarch butterflies [#permalink]

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New post 15 Jan 2010, 13:36
yes I think monarch and monarch butterfly are not same so B is the only option we left with but still initially the text was talking about earth electro-magneticity but suddenly electricity is odd option.
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Re: CR: monarch butterflies [#permalink]

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New post 19 Jan 2010, 08:48
I had to choose between B and C. I erroneously chose B. I guess my take-away is to go with the simplier answer.

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Re: CR: monarch butterflies [#permalink]

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New post 08 Jun 2010, 07:55
incorrect way of reasoning as passage states" Scientists theorize that monarchs,"

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Re: CR: monarch butterflies [#permalink]

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New post 19 Jan 2011, 09:16
went with D but thanks for the explanations

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Re: CR: monarch butterflies [#permalink]

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New post 19 Jan 2011, 16:19
I can bet you will not see such a question on GMAT

"low-voltage transmitter"----now how can u say tht it produces electricity ?
So one has to infer in this question !

The ans is B
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Re: CR: monarch butterflies [#permalink]

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New post 19 Jan 2011, 16:37
yea. i thought low voltage transmitter is magnetic and thus went with D

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 16 Dec 2011, 08:03
This question is not standard.

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 16 Dec 2011, 08:18
B
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 03 Jan 2012, 23:04
I'm glad I'm not the only one who went with D. Lesson learned, never assume.

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 04 Jan 2012, 01:39
+1 for b

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 23 Jan 2012, 10:59
I got tricked by this question real bad. I thought it was D but B makes more sense since if monarchs are repelled by the electricity it does not prove that they map their routes. Also it should be monarch butterflies not monarch. I must of went through fast through this problem

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 23 Jan 2012, 13:45
+1 B .....The logic is to avoid assuming..

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 24 Jan 2012, 02:03
clear B

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 24 Jan 2012, 08:22
can we eliminate B just because monarchs is used instead of monarch butterflies...


somebody please explain...
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 07 Nov 2013, 04:40
Sometimes we think too much into the answer. Had the statistics for the question not been provided. I would have chosen B straightaway.

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Monarch butterflies, whose average life span is nine months, [#permalink]

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Monarch butterflies, whose average life span is nine months, migrate from the midwestern United States to selected forests outside Mexico City. It takes at least three generations of monarchs to make the journey, so the great-great-grandchildren who finally arrive in the Mexican forests have never been there before. Yet they return to the same trees their forebears left. Scientists theorize that monarchs, like homing pigeons, map their routes according to the earth’s electromagnetic fields. As a first step in testing this theory, lepidopterists plan to install a low-voltage transmitter inside one grove of “butterfly trees” in the Mexican forests. If the butterflies are either especially attracted to the grove with the transmitter or especially repelled by it, lepidopterists will have evidence that______

(A) monarch butterflies have brains, however minuscule
(B) monarch butterflies are sensitive to electricity
(C) low-voltage electricity can affect butterflies, whether positively or adversely
(D) monarchs map their routes according to the earth’s electromagnetic fields
(E) monarchs communicate in intergenerationally via electromagnetic fields
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 28 Jul 2014, 10:50
How is the solution B ? Why not D ? Nowhere in the stem is the sensitivity to electricity mentioned

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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 28 Jul 2014, 11:03
himanshujovi wrote:
How is the solution B ? Why not D ? Nowhere in the stem is the sensitivity to electricity mentioned


D: just states what's in the passage. "Monarchs, like homing pigeons, map their routes according to the earth’s electromagnetic fields"- This already present as theory stated by the scientists.

The electromagnetic field will have electric current. So if they prove that Monarch Butterfly either attracted or repelled by the electricity produced by transmitters then they are sensitive to electricity.
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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New post 28 Jul 2014, 19:40
Just think about what we're proving: if the butterflies are attracted or repelled by the low-voltage transmitter, the only thing that we can actually conclude is that they are sensitive to electricity. We have no conclusive evidence as to whether the scientist's theory is accurate; this just somewhat supports the hypothesis. So the strongest answer is B.

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Re: Monarch butterflies, whose average life span is nine months,   [#permalink] 28 Jul 2014, 19:40

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