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It has been over 30 years since a manned mission to the moon. But now,

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It has been over 30 years since a manned mission to the moon. But now, [#permalink]

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Question Stats:

43% (01:24) correct 57% (01:39) wrong based on 96 sessions

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Source: Mcgraw Hill GMAT

It has been over 30 years since a manned mission to the moon. But now, scientists are planning to place a research station on the south pole of the moon to gather data on the moon’s seismic activity and weather patterns. The research station will be completed and launched in two years, so humans will once again walk on the moon.

Which of the following statements, if true, most seriously weakens the argument above?

A. The information gathered by the lunar research station could also be acquired by placing a satellite into orbit over the moon.
B. The lunar research instruments are part of a module that will be launched into space and parachute onto the moon’s surface.
C. Advances in technology have reduced the chances of a space flight disaster to half of the levels they were 30 years ago.
D. The instruments on the lunar research station are so complex that a human technician is required to fix them if they malfunction.
E. Although the research station will use solar power, researchers expect that the instruments will operate for no more than five years.
[Reveal] Spoiler: OA

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Re: It has been over 30 years since a manned mission to the moon. But now, [#permalink]

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New post 01 Mar 2017, 22:21
Conclusion :- Man will walk the moon on the given mission

Premises :- Last lunar manned mission 30 years ago; Scientists plan to place research satellite on South Pole of moon to gather data


Options C, D,E can be negated at first look since they do not concern the argument raised

Option A talks about gathering data by placing satellite in the moon's orbit, which is not the question at hand since the argument concludes that man will have to walk on moon's surface of the conditions mentioned in premise have to be fulfilled

Option B mentions an alternate reasoning/way which will not require man walking on moon but satisfies condition of the premises.
Hence, B is a decent option

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It has been over 30 years since a manned mission to the moon. But now, [#permalink]

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New post 02 Mar 2017, 02:37
SajjadAhmad wrote:
Source: Mcgraw Hill GMAT

It has been over 30 years since a manned mission to the moon. But now, scientists are planning to place a research station on the south pole of the moon to gather data on the moon’s seismic activity and weather patterns. The research station will be completed and launched in two years, so humans will once again walk on the moon.

Which of the following statements, if true, most seriously weakens the argument above?

A. The information gathered by the lunar research station could also be acquired by placing a satellite into orbit over the moon.
B. The lunar research instruments are part of a module that will be launched into space and parachute onto the moon’s surface.
C. Advances in technology have reduced the chances of a space flight disaster to half of the levels they were 30 years ago.
D. The instruments on the lunar research station are so complex that a human technician is required to fix them if they malfunction.
E. Although the research station will use solar power, researchers expect that the instruments will operate for no more than five years.


Conclusion : humans will once again walk on the moon.

Assumption : Humans will be required to gather data or operate machines that gather data walking on the moon in the process.
In order to weaken we need to prove that humans wont be required to operate or gather data .
Only option B states that. hence correct.
option A is a trap. we are concerned with what happens when there is a space station not when there is not!
It has been over 30 years since a manned mission to the moon. But now,   [#permalink] 02 Mar 2017, 02:37
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It has been over 30 years since a manned mission to the moon. But now,

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