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# Geologists believe that the warning signs for a major

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Director
Joined: 20 Apr 2005
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Geologists believe that the warning signs for a major [#permalink]

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15 Jun 2005, 15:47
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326. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earthâ€™s crust, changing the measured stain across a fault zone, and varying the electrical properties of underground rocks.

(A) changing the measured strain across a fault zone, and varying
(B) changing measurements of the strain across a fault zone, and varying
(C) changing the strain as measured across a fault zone, and variations of
(D) changes in the measured strain across a fault zone, and variations in
(E) changes in measurements of the strain across a fault zone, and variations among

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GMAT Club Legend
Joined: 07 Jul 2004
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15 Jun 2005, 17:29
D is best. maintains proper parallelism. 'variations in' is also the correct idiomatic form.

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Director
Joined: 20 Apr 2005
Posts: 584

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16 Jun 2005, 07:29
The OA is D.

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# Geologists believe that the warning signs for a major

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