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# Monarch butterflies, whose average life span is nine months,

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Intern
Joined: 07 Jun 2010
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08 Jun 2010, 07:55
incorrect way of reasoning as passage states" Scientists theorize that monarchs,"
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19 Jan 2011, 09:16
went with D but thanks for the explanations
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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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19 Jan 2011, 16:37
yea. i thought low voltage transmitter is magnetic and thus went with D
Intern
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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16 Dec 2011, 08:03
This question is not standard.
Intern
Joined: 24 Nov 2011
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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03 Jan 2012, 23:04
I'm glad I'm not the only one who went with D. Lesson learned, never assume.
Intern
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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

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

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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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28 Jul 2014, 08:12
1
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This post was
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This is my new project: Renew Old Thread => Back to basic => Just try It and give your reasoning
The topic will be sticky for 2 days from starting

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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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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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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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]

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16 Feb 2015, 15:23
1
KUDOS
I think the official answer is incorrect.

The problem stem states clearly that the reason the transmitter was set up was to test the hypothesis that geomagnetism impacts the route of the monarch butterflies. So, the test is on magnetism distortion response. There is no mention of any sensitivity to electricity, and also, (could not help - this one ) a transmitter does not transmit electricity...transmits electromagnetic waves ...

One of the self crafted questions floating around, perhaps ?....
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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16 Nov 2015, 22:48
Why not D? Why are they trying to prove that the butterflies are sensitive to electricity not electromagnetic waves?
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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18 Nov 2015, 20:57
Hi,

I am not sure how B is the correct answer but D is definitely not correct. Inference question requires one to find implied meaning.. not explicitly mentioned in the passage...Here D is explicitly mentioned and hence cant be the correct answer.

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

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19 Nov 2015, 00:47
why not C?

D is wrong because the test does nothing to indicate about earth's electromagnetic field. the test takes a first step (and how can you draw full conclusion of the premise with just first step of the test)

why is C incorrect over B? B is a more general statement saying they are sensitive to electricity - agreed. but C has more specifics like low voltage and repel/attract. I would challenge B saying how can you generalize the result with "electricity" when the test was conducted on low voltage only. (yeah, common sense says that if sensitive to low, will be highly sensitive to high voltage )
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Re: Monarch butterflies, whose average life span is nine months, [#permalink]

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04 Aug 2016, 03:55
Dear all,

I chose C at first, but after reading the very detail & insight explanation here:

monarch-butterflies-whose-average-life-span-is-nine-months-76159.html

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

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04 May 2017, 20:41
I choose D.
But after Confirming OA as B. I reread the question stimulus. Where i forgot to read the piece of info "first step in testing this theory" . Now i can say that just first step to research is not enough to come into the conclusion of the goal. So D is wrong . B is apt .
C is wrong - positively and adversely ?? Ambiguous isn't it.
Re: Monarch butterflies, whose average life span is nine months,   [#permalink] 04 May 2017, 20:41

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