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# GMAT OFFICIAL GUIDE 12th EDITION: Q6. In late 1997, the

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GMAT OFFICIAL GUIDE 12th EDITION: Q6. In late 1997, the [#permalink]

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25 Dec 2010, 06:24
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GMAT OFFICIAL GUIDE 12th EDITION:
Q6. In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Gaza were closed to visitors for cleaning and repair " due to moisture exhaled by the tourists, which raised its humidity to such levels so that salt from the stone was crystallizing" and fungus was growing on the walls.

A. because moisture exhaled by tourists had raised the humidity within them to such levels that salt from the stone was crystallizing.

Can anyone please explain why this choice has been picked by GMAT as the right answer? Cause to me THEM in the sentence could either refer to tourists or chambers and make the sentence not clear.
[Reveal] Spoiler: OA

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Re: Official Guide Question dilemmas [#permalink]

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25 Dec 2010, 08:09
You just have to expand the sentence and you will know whether ‘tourists or chambers’ is logical.

Because moisture exhaled by tourists had risen the humidity within them to such levels that salt from the stone was crystallizing.

Expanded;
Because moisture exhaled by tourists had raised the humidity within (them) tourists to such levels that salt from the stone was crystallizing.

Now this means that ‘moisture was ‘exhaled within’ tourists, and that exhalation was to such levels that salt from stones was crystallizing. What logic is ‘tourists exhaling within tourists’?

So “them” should unambiguously refer to chambers

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Re: Official Guide Question dilemmas   [#permalink] 25 Dec 2010, 08:09
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# GMAT OFFICIAL GUIDE 12th EDITION: Q6. In late 1997, the

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