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Parallel comparison!

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by gmat_perfect » Thu Jul 15, 2010 12:41 pm
A group of paleontologists recently announced that a site in Utah has yielded fossils of some of the biggest armored dinosaurs ever found, and they are at least 25 million years older than those of any similar dinosaur type that previously was found in North America.

(A) and they are at least 25 million years older than those of any similar dinosaur type that previously was
(B) and that they were at least 25 million years older than any similar dinosaur type previously
(C) and the fossils are at least 25 million years older than any similar dinosaur types that previously were
(D) fossils that are at least 25 million years older than those of any similar dinosaur type previously
(E) fossils at least 25 million years older than similar dinosaur types that were previously

[spoiler]OA:D[/spoiler]

Please explain why are the wrong options wrong.

Thanks.
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by ayushiiitm » Thu Jul 15, 2010 1:18 pm
gmat_perfect wrote:A group of paleontologists recently announced that a site in Utah has yielded fossils of some of the biggest armored dinosaurs ever found, and they are at least 25 million years older than those of any similar dinosaur type that previously was found in North America.

(A) and they are at least 25 million years older than those of any similar dinosaur type that previously was
(B) and that they were at least 25 million years older than any similar dinosaur type previously
(C) and the fossils are at least 25 million years older than any similar dinosaur types that previously were
(D) fossils that are at least 25 million years older than those of any similar dinosaur type previously
(E) fossils at least 25 million years older than similar dinosaur types that were previously

[spoiler]OA:D[/spoiler]

Please explain why are the wrong options wrong.

Thanks.
A>>they is ambiguous
B>> they is ambiguous
C>> comparison done between fossils and dinosaur types. Those should be used as in D
D>> the second clause is used as appositive. fossils is written again to emphasize
I remeber a sentence in OG 12 on similar lines.....where the sentences structure was like this
Lawyer gave example of newton's laws, laws that are........

E>> that is necessary to point out that we are talking about particular fossils
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by fukushima.ryan » Thu Jul 15, 2010 3:25 pm
Can someone help clarify how the appositive is used correctly in D?

I thought appositives must be next to the noun they are modifying. Since "fossils" is restated is this an exception to the rule? An explanation would help tremendously. Thanks!
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by adi_800 » Thu Jul 15, 2010 8:48 pm
does they in B ambiguous
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by apex231 » Thu Jul 15, 2010 9:47 pm
adi_800 wrote:does they in B ambiguous
Yes it is ambiguous. Other issues with B are -

1) comparing fossils to "dinosaur type".
2) use of "were"
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by uwhusky » Thu Jul 15, 2010 9:50 pm
fukushima.ryan wrote:Can someone help clarify how the appositive is used correctly in D?

I thought appositives must be next to the noun they are modifying. Since "fossils" is restated is this an exception to the rule? An explanation would help tremendously. Thanks!
There are bunch of names for these modifiers, and I am confused often on which name is referring to which. With that said, I'll introduce you the Absolute Phrase =). You can refer to page 237 in MGMAT SC guide for more details on this clause's particular usage.
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by xyh133 » Thu Jul 15, 2010 11:36 pm
A B C E: fossils compare with types
D: types compare with types
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by fukushima.ryan » Fri Jul 16, 2010 10:52 am
uwhusky wrote:
fukushima.ryan wrote:Can someone help clarify how the appositive is used correctly in D?

I thought appositives must be next to the noun they are modifying. Since "fossils" is restated is this an exception to the rule? An explanation would help tremendously. Thanks!
There are bunch of names for these modifiers, and I am confused often on which name is referring to which. With that said, I'll introduce you the Absolute Phrase =). You can refer to page 237 in MGMAT SC guide for more details on this clause's particular usage.
Thanks for the reference. I'll take a look again.
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