Sunspots.... : GMAT Verbal Section
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# Sunspots....

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Manager
Joined: 20 May 2004
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12 Jul 2004, 15:07
Sunspots, vortices of gas associated with strong electro-magnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sunâ€™s poles or equator.
(A) are visible as dark spots on the surface of the Sun but have never been sighted on
(B) are visible as dark spots that never have been sighted on the surface of the Sun
(C) appear on the surface of the Sun as dark spots although never sighted at
(D) appear as dark spots on the surface of the Sun, although never having been sighted at
(E) appear as dark spots on the Sunâ€™s surface, which have never been sighted on

I am stuck between A and C. Plz explain ur answer.

Thanks
Satya
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12 Jul 2004, 15:16
sighted at is Idiomatic.
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12 Jul 2004, 20:16
1 min and C. Should be "at the sun's poles and equator".
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12 Jul 2004, 20:16
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