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Animals whose natural habitats are endangered by industrial developmen

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Animals whose natural habitats are endangered by industrial developmen [#permalink]

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New post 20 Mar 2017, 00:24
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

76% (00:47) correct 24% (01:08) wrong based on 127 sessions

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Animals whose natural habitats are endangered by industrial development either migrate to new environments, which leads to potential ecological imbalances, or try to survive in the dwindling areas that remain, often leading to extinction.

A. which leads to potential ecological imbalances, or try
B. leading to potential ecological imbalances, or trying
C. and can lead to potential ecological imbalances, or try
D. leading to potential ecological imbalances, or try
E. lead to potential ecological imbalances, and try
[Reveal] Spoiler: OA

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Re: Animals whose natural habitats are endangered by industrial developmen [#permalink]

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New post 20 Mar 2017, 02:43
ziyuen wrote:
Animals whose natural habitats are endangered by industrial development either migrate to new environments, which leads to potential ecological imbalances, or try to survive in the dwindling areas that remain, often leading to extinction.

A. which leads to potential ecological imbalances, or try
B. leading to potential ecological imbalances, or trying
C. and can lead to potential ecological imbalances, or try
D. leading to potential ecological imbalances, or try
E. lead to potential ecological imbalances, and try


Posted from my mobile device [img]http://gmatclìub.com/static/mobile.png[/img]
Error analysis.
Which leads to ..here which modified environment.
It should be verb-ing here..as this phrase shows effect of previous one.
Eliminate all except B and D
Prob with B- here
Either .... or ....
The part of sentence after 'or' is not parallel to the former part after 'either'
So D is the answer.
It's parallel and correct use of verb-ing

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Re: Animals whose natural habitats are endangered by industrial developmen [#permalink]

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New post 20 Mar 2017, 06:56
Clearly D.

A. Which cannot be used to refer
a verb.

B. Trying has to be parallel to
migrate.
C. And conjunction is wrong.
D. Lead is wrong. Leading is
required to show effect.

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Re: Animals whose natural habitats are endangered by industrial developmen [#permalink]

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New post 21 Mar 2017, 14:53
Animals whose natural habitats are endangered by industrial development either migrate to new environments, which leads to potential ecological imbalances, or try to survive in the dwindling areas that remain, often leading to extinction.

A. which leads to potential ecological imbalances, or try
B. leading to potential ecological imbalances, or trying
C. and can lead to potential ecological imbalances, or try
D. leading to potential ecological imbalances, or try
E. lead to potential ecological imbalances, and try

Modifier,
A: which modifies the noun before the comma, environment.
B: leading is correct but trying is wrongly made ing form because the correct should be either migrate,or try.
C: parallelism error
D: is the correct answer because leading is correctly modifying the clause before it.
E: is incorrect because Lead to does not modify the migration correctly and the idion is either or not either and.

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Re: Animals whose natural habitats are endangered by industrial developmen [#permalink]

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New post 30 Apr 2017, 11:34
This problem deals with a number of decision points, most notably the "either X or Y" construction that begs two things: 1) the word "or" to go with "either" (this eliminates choice E), and 2) a parallel construction between the portion after "either" and the portion after "or."

Note that the word after "either" is "migrate," a present verb parallel to "try." Since "trying" changes the tense and is not parallel, you can eliminate choice B.

For strict parallel structure standards, note what happens in correct answer choice D. If you simply break the construction into the verbs, you have "Animals either migrate, leading to X, or try, often leading to Y." That participial phrase "leading" is parallel as the modifier for both parallel verbs, making a perfectly parallel construction and rendering choice D correct.

You can also eliminate choice A given the restrictive "which" modifier. It's not "environments" leading to potential ecological imbalances, and even if you didn't see that logically the verb "leads" is singular and "environments" is plural, meaning that the construction fails there, too. Finally, in choice C a logical flaw takes place: "and can lead" would mean that "lead" is parallel to "migrate." That would mean that it is the animals that can lead to imbalances, when logically it is the situation caused by their mass migration.

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Animals whose natural habitats are endangered by industrial developmen [#permalink]

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New post 26 Sep 2017, 06:59
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hazelnut wrote:
Animals whose natural habitats are endangered by industrial development either migrate to new environments, which leads to potential ecological imbalances, or try to survive in the dwindling areas that remain, often leading to extinction.

A. which leads to potential ecological imbalances, or try
B. leading to potential ecological imbalances, or trying
C. and can lead to potential ecological imbalances, or try
D. leading to potential ecological imbalances, or try
E. lead to potential ecological imbalances, and try


At first glance we have 2 decision points at the beginning and at the ending of the underlined portion of the sentence:

first decision point: which versus leading versus lead and can lead

"Lead" & "can lead" are verbs and we need a modifier, so E&C eliminated
"Which" modifies the immediate preceeding noun, so A is eliminated
B&D left, as both employ "leading" as modifier for the action of migration properly

Second decision point: "to try" versus "or trying"

Since this is either/or structure, then D is the correct answer as it maintains the parallelism either migrate to...or try to
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Animals whose natural habitats are endangered by industrial developmen   [#permalink] 26 Sep 2017, 06:59
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