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One of the more reliable methods of determining regional

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Senior Manager
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One of the more reliable methods of determining regional [#permalink]

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New post 01 Jul 2009, 02:25
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Question Stats:

51% (01:17) correct 49% (01:17) wrong based on 154 sessions

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One of the more reliable methods of determining regional climatic conditions in prehistoric periods is to examine plant pollen trapped in glacial ice during ancient times. By comparing such pollen samples with spores taken from modern vegetation, scientists can figure out approximately what the weather was like at the time of pollen deposition. Furthermore, by submitting the prehistoric samples to radiocarbon dating techniques, we can also determine when certain climatic conditions were prevalent in that portion of the globe.

Which one of the following may be inferred from the information in the passage?
(A) The earth has undergone several glacial periods.
(B) Radiocarbon dating can be corroborated by glacial evidence.
(C) Similarities between prehistoric and contemporary climates do not exist.
(D) Pollen deposition is a fairly continuous process.
(E) Certain flora are reliably associated with particular climatic conditions.


The OA is
[Reveal] Spoiler:
e


Please Explain
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Re: One of the more reliable method [#permalink]

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New post 02 Jul 2009, 12:30
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vaivish1723 wrote:
One of the more reliable methods of determining regional climatic conditions in prehistoric periods is to examine plant pollen trapped in glacial ice during ancient times. By comparing such pollen samples with spores taken from modern vegetation, scientists can figure out approximately what the weather was like at the time of pollen deposition. Furthermore, by submitting the prehistoric samples to radiocarbon dating techniques, we can also determine when certain climatic conditions were prevalent in that portion of the globe.

Which one of the following may be inferred from the information in the passage?
(A) The earth has undergone several glacial periods.
(B) Radiocarbon dating can be corroborated by glacial evidence.
(C) Similarities between prehistoric and contemporary climates do not exist.
(D) Pollen deposition is a fairly continuous process.
(E) Certain flora are reliably associated with particular climatic conditions.


(A) We know info is extracted from current glaciers, we can't infer anything about "glacial periods".
(B) No, glacial evidence tell us the TYPE of climate, whereas carbon dating tell us WHEN that climate was prevalent.
(C) We don't know whether similarities exist, we only know the climates of the different periods can be compared.
(D) We don't know how "continuous" pollen is, we don't know how often we find it in the glaciers.

(E) By POE, this is the only choice left. We know we can determine climate by examining frozen prehistoric pollen from plants, so certain plants must be reliable indicators of what type of climate/weather existed in a given region.
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Re: One of the more reliable method [#permalink]

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New post 03 Jul 2009, 00:08
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Since this is an inference question, we need to select an option which the above argument suggests, but not explicitly given in the argument.

(A) The earth has undergone several glacial periods. - argument just talking about determining climatic condition. We don't know if earth has undergone several glacial periods
(B) Radiocarbon dating can be corroborated by glacial evidence. -argument just mentions about determining the period using radiocarbon dating
(C) Similarities between prehistoric and contemporary climates do not exist. - Argument actually says opposite of this "By comparing such pollen samples with spores taken from modern vegetation"
(D) Pollen deposition is a fairly continuous process. -I would say this is an assumption in the argument. If its not continuous process then scientists may not be able to determine climatic conditions in certain prehistoric periods.
(E) Certain flora are reliably associated with particular climatic conditions. -The argument says "One of the more reliable methods of ....", so we can infer this option.
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Re: One of the more reliable method [#permalink]

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New post 30 May 2011, 09:31
Answer is E as it can be clearly inferred from the stimulus.
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Re: One of the more reliable method [#permalink]

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New post 30 May 2011, 18:21
I had to scan this twice but I eventually went with E by POE
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Re: One of the more reliable methods of determining regional [#permalink]

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New post 25 Jan 2012, 10:52
Can someone please explain what I'm missing here?

The stimulus talks about examining plant pollen. (E) talks about flora. How can (E) be the correct answer????

IMO (B) is the correct answer because this is exactly what the stimulus says:

Furthermore, by submitting the prehistoric samples to radiocarbon dating techniques, we can also determine when certain climatic conditions were prevalent in that portion of the globe.
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Re: One of the more reliable methods of determining regional [#permalink]

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New post 25 Jan 2012, 11:07
Could you elaborate your answer, or are you just trying to increase your post counter?
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Re: One of the more reliable methods of determining regional [#permalink]

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New post 06 Dec 2017, 16:18
this is a question from LSAT, but I think this question also sounds like an official gmat question.
I also think the correct answer should be C, but I am not sure.
Re: One of the more reliable methods of determining regional   [#permalink] 06 Dec 2017, 16:18
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