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Using computer techniques, researches analyze layers of

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Using computer techniques, researches analyze layers of [#permalink] New post 16 Mar 2008, 08:25
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Using computer techniques, researches analyze layers of paint that lie buried beneath the surface layers of old paintings. They claim, for example, that additional mountainous scenery once appeared in Leonardo da Vinci’s Mona Lisa, which was later painted over. Skeptics reply to these claims, however, that X-ray examinations of the Mona Lisa do not show hidden mountains.

Which of the following, if true, would tend most to weaken the force of the skeptics’ objections?

(A) There is no written or anecdotal record that Leonardo da Vinci ever painted over major areas of his Mona Lisa.
(B) Painters of da Vinci’s time commonly created images of mountainous scenery in the backgrounds of portraits like Mona Lisa.
(C) No one knows for certain what parts of the Mona Lisa may have been painted by da Vinci’s assistants rather than by da Vinci himself.
(D) Infrared photography of the Mona Lisa has revealed no trace of hidden mountainous scenery.
(E) Analysis relying on X-rays only has the capacity to detect lead-white pigments in layers of paint beneath a painting’s surface layers.
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Re: CR 30:4/30 [#permalink] New post 16 Mar 2008, 08:35
Quite difficult .... :|

but i will go with B .
as this only tends to weaken the skeptics argument .
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Re: CR 30:4/30 [#permalink] New post 16 Mar 2008, 09:06
I think here we have to prove that somehing wrong is with their x-ray technique that was used to determine that there was no mountains on the background.
B says that painters on DaVinci's time used to paint mountains scenery on the backgrounds of the paintings,but this doens't prove that this was the case with the Mona Lisa painting. And the skeptics theory would still hold because of the x-ray examination.
I think E is the answer. It's the only answer that talkes about x-ray and it's only ability to detect lead-white pigments under the painting layers.
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Re: CR 30:4/30 [#permalink] New post 16 Mar 2008, 10:08
moni77 wrote:
I think here we have to prove that somehing wrong is with their x-ray technique that was used to determine that there was no mountains on the background.
B says that painters on DaVinci's time used to paint mountains scenery on the backgrounds of the paintings,but this doens't prove that this was the case with the Mona Lisa painting. And the skeptics theory would still hold because of the x-ray examination.
I think E is the answer. It's the only answer that talkes about x-ray and it's only ability to detect lead-white pigments under the painting layers.

E for the same reason!
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Re: CR 30:4/30 [#permalink] New post 16 Mar 2008, 10:42
OA is E
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Re: CR 30:4/30   [#permalink] 16 Mar 2008, 10:42
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