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Expert replies
by mmslf75 » Sat Jan 02, 2010 9:36 pm
People with a certain eye disorder are virtually unable to see in moderately bright light, which seems to them unbearably intense, since the cells of their retinas are overwhelmed by moderately bright light. These people do, however, show normal sensitivity to most components of dim light. Their retinal cells are also not excessively sensitive to red components of moderately bright light.
The information above best supports which of the following hypotheses about people with the disorder described, if they have no other serious visual problems?
A. In all moderately dim light in which people without the disorder can read large print, people with the disorder cannot read such print.
B. In an otherwise darkened concert hall, these people will see a dimly illuminated red exit sign more clearly than small dim white lights that mark the aisles.
C. These people typically see more acutely at night and in dim light than do most people who do not have the disorder.
D. Eyeglasses that are transparent to red components of light but filter out other components of light help these people see in moderately bright light.
E. These people perceive colors other than red in the same way as do most people who do not have the disorder.

it's from GMAT Sets, dont know the OA
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Source: — Critical Reasoning |

by gmatv09 » Mon Jan 04, 2010 2:07 pm
IMO D
retinal cells are also not excessively sensitive to red components of moderately bright light[/color]
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by mehravikas » Mon Jan 04, 2010 8:23 pm
A. In all moderately dim light in which people without the disorder can read large print, people with the disorder cannot read such print. - There is no excessively sensitive with dim light
B. In an otherwise darkened concert hall, these people will see a dimly illuminated red exit sign more clearly than small dim white lights that mark the aisles. - again no excessively sensitive with dim light
C. These people typically see more acutely at night and in dim light than do most people who do not have the disorder. - we dont know about people who do not have the disorder
D. Eyeglasses that are transparent to red components of light but filter out other components of light help these people see in moderately bright light. - Correct answer. such people do not have excessively sensitive with Red components. Therefore if other components are filtered out, they should be able to see clearly.
E. These people perceive colors other than red in the same way as do most people who do not have the disorder. - This is clearly false
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by sadullaevd » Tue Jan 05, 2010 6:10 am
I would agree with reasoning above.

D seems correct.

cheers,
Stay skeptical,
Think critically,
Assume nothing.
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by ssgmatter » Sat May 22, 2010 7:39 am
mmslf75 wrote:People with a certain eye disorder are virtually unable to see in moderately bright light, which seems to them unbearably intense, since the cells of their retinas are overwhelmed by moderately bright light. These people do, however, show normal sensitivity to most components of dim light. Their retinal cells are also not excessively sensitive to red components of moderately bright light.
The information above best supports which of the following hypotheses about people with the disorder described, if they have no other serious visual problems?
A. In all moderately dim light in which people without the disorder can read large print, people with the disorder cannot read such print.
B. In an otherwise darkened concert hall, these people will see a dimly illuminated red exit sign more clearly than small dim white lights that mark the aisles.
C. These people typically see more acutely at night and in dim light than do most people who do not have the disorder.
D. Eyeglasses that are transparent to red components of light but filter out other components of light help these people see in moderately bright light.
E. These people perceive colors other than red in the same way as do most people who do not have the disorder.

it's from GMAT Sets, dont know the OA
Is this a must be true question type?
Best-
Amit
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