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Health check-ups in schools of Wendhal have revealed that the eyesight

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Health check-ups in schools of Wendhal have revealed that the eyesight  [#permalink]

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New post 19 Dec 2018, 10:37
2
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

41% (01:59) correct 59% (01:40) wrong based on 88 sessions

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Health check-ups in schools of Wendhal have revealed that the eyesight of students has decreased over the last ten years. School authorities feel that long hours in the front of the computer can be the only explanation for this.

Which of the following, if true, most seriously weakens the statement made above?

Options:
1. The lunch provided to students in the schools in Wendhal provides the students with all the necessary nutrition required for a healthy eyesight.

2. Students of Wendhal schools spend more time and money on computer games than those of neighboring towns.

3. Schools in other cities where students spend as much time in front of the computer as students in Wendhal have not reported a decline in the eyesight of their students.

4. Many other places in the country have found that spending long hours in the front of the computer is not always related to poorer eyesight.

5. Many schools in other cities have reported larger decline in the eyesight of their students over the last ten years though they spend much lesser time in front of the computer than Wendhal students.

Source - IMS
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Re: Health check-ups in schools of Wendhal have revealed that the eyesight  [#permalink]

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New post 19 Dec 2018, 20:30
1
A and B Out
Lets analyze C D and E , per the understanding that this is a causal pattern.

c ----> Cause is present effect is not. Maybe some thing is offsetting the effect.
D----> Is not always related, but in many cases like Wenhal maybe related. OUT
E----> Cause not there, effect is present. Hence effect is governed not only by the cause in hand, there maybe some other causes. Sufficient to weaken.
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Re: Health check-ups in schools of Wendhal have revealed that the eyesight  [#permalink]

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New post 19 Dec 2018, 14:38
disenapati wrote:
Health check-ups in schools of Wendhal have revealed that the eyesight of students has decreased over the last ten years. School authorities feel that long hours in the front of the computer can be the only explanation for this.

Which of the following, if true, most seriously weakens the statement made above?

Options:
1. The lunch provided to students in the schools in Wendhal provides the students with all the necessary nutrition required for a healthy eyesight.

2. Students of Wendhal schools spend more time and money on computer games than those of neighboring towns.

3. Schools in other cities where students spend as much time in front of the computer as students in Wendhal have not reported a decline in the eyesight of their students.

4. Many other places in the country have found that spending long hours in the front of the computer is not always related to poorer eyesight.

5. Many schools in other cities have reported larger decline in the eyesight of their students over the last ten years though they spend much lesser time in front of the computer than Wendhal students.

Source - IMS


This question would be 500 if it were not for the answer choices.

A --> Out of scope

B--> Strengthens argument

C/D/E all find the assumption made, that computer time reduces eyesight. C & D, however, provide some counter argument, but E completely removes the causality assumed.

Answer E
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Re: Health check-ups in schools of Wendhal have revealed that the eyesight   [#permalink] 19 Dec 2018, 14:38
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Health check-ups in schools of Wendhal have revealed that the eyesight

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