Art restorers who have been studying : GMAT Critical Reasoning (CR)
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# Art restorers who have been studying

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Art restorers who have been studying [#permalink]

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16 Oct 2013, 06:40
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Official Guide for GMAT Verbal Review, 2nd Edition

Practice Question
Question No.: 33
Page: 128
Difficulty:

Art restorers who have been studying the factors that cause Renaissance oil paintings to deteriorate physically when subject to climatic changes have found that the oil paint used in these paintings actually adjusts to these changes well. The restorers therefore hypothesize that it is a layer of material called gesso,which is under the paint, that causes the deterioration.

Which of the following, if true, most strongly supports the restorers’ hypothesis?

(A) Renaissance oil paintings with a thin layer of gesso are less likely to show deterioration in response to climatic changes than those with a thicker layer.
(B) Renaissance oil paintings are often painted on wooden panels, which swell when humidity increases and contract when it declines.
(C) Oil paint expands and contracts readily in response to changes in temperature, but it absorbs little water and so is little affected by changes in humidity.
(D) An especially hard and nonabsorbent type of gesso was the raw material for moldings on the frames of Renaissance oil paintings.
(E) Gesso layers applied by Renaissance painters typically consisted of a coarse base layer onto which several increasingly fi ne-grained layers were applied.
[Reveal] Spoiler: OA

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Last edited by Narenn on 17 Oct 2013, 02:06, edited 1 time in total.
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Re: Art restorers who have been studying [#permalink]

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16 Oct 2013, 20:27
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(A) Renaissance oil paintings with a thin layer of gesso are less likely to show deterioration in response to climatic changes than those with a thicker layer.--- CORRECT, because this shows that the less the gesso, the less deterioration.
More gesso leads to more deterioration.

(B) Renaissance oil paintings are often painted on wooden panels, which swell when humidity increases and contract when it declines.--- Weakening the hypothesis because this says wood panels could be to blame for deterioration.
(C) Oil paint expands and contracts readily in response to changes in temperature, but it absorbs little water and so is little affected by changes in humidity. --- This supports but only talks about oil paint. But the hypothesis is about Gesso and not oil paints.
(D) An especially hard and nonabsorbent type of gesso was the raw material for moldings on the frames of Renaissance oil paintings.--- Type of gesso is irrelevant. We are only concerned about how it affects the deterioration.
(E) Gesso layers applied by Renaissance painters typically consisted of a coarse base layer onto which several increasingly fi ne-grained layers were applied.--- Irrelevant. Does not show us the effect of Gesso.
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Re: Art restorers who have been studying [#permalink]

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18 Nov 2013, 02:59
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akashb106 wrote:
(A) Renaissance oil paintings with a thin layer of gesso are less likely to show deterioration in response to climatic changes than those with a thicker layer.--- CORRECT, because this shows that the less the gesso, the less deterioration.
More gesso leads to more deterioration.

(B) Renaissance oil paintings are often painted on wooden panels, which swell when humidity increases and contract when it declines.--- Weakening the hypothesis because this says wood panels could be to blame for deterioration.
(C) Oil paint expands and contracts readily in response to changes in temperature, but it absorbs little water and so is little affected by changes in humidity. --- This supports but only talks about oil paint. But the hypothesis is about Gesso and not oil paints.
(D) An especially hard and nonabsorbent type of gesso was the raw material for moldings on the frames of Renaissance oil paintings.--- Type of gesso is irrelevant. We are only concerned about how it affects the deterioration.
(E) Gesso layers applied by Renaissance painters typically consisted of a coarse base layer onto which several increasingly fi ne-grained layers were applied.--- Irrelevant. Does not show us the effect of Gesso.

How does the amount of gesso count? There is no such information in the stem. It says, used gesso => less resistant.
IMO D could be a good candidate, since it infers that to mold the frames they had to use gesso, although it speaks of a specific type of gesso which makes it less appealing.
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Re: Art restorers who have been studying [#permalink]

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08 Dec 2014, 02:47
Hi,

All D is trying to say is the type of material that gesso is, it in no way supports the hypothesis. That is why D is wrong.
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Re: Art restorers who have been studying [#permalink]

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14 Apr 2016, 09:56
Conclusion: Guesso causes deterioration of paintings
Premise: Paint adjusts well to climatic changes

Something which says guesso doesn't adjust well to climatic changes will support the conclusion.
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Re: Art restorers who have been studying [#permalink]

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04 May 2016, 15:08
Prethink: Need a statement that says something about how Gesso causes the damage.

A. Less Gesso = less damage
Re: Art restorers who have been studying   [#permalink] 04 May 2016, 15:08
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