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Glaciers that are seated in deep submarine basins are

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Glaciers that are seated in deep submarine basins are  [#permalink]

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New post Updated on: 29 Jun 2013, 08:17
4
8
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

61% (01:44) correct 39% (01:46) wrong based on 371 sessions

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Glaciers that are seated in deep submarine basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating in the last decades.

(A)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating
(B)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreated
(C)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and are rapidly retreating
(D)basins, vulnerable to small changes in ocean temperature, occurred over the 20th century and have been rapidly retreating
(E)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and have been rapidly retreating

Originally posted by guerrero25 on 27 Jun 2013, 16:28.
Last edited by guerrero25 on 29 Jun 2013, 08:17, edited 1 time in total.
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Re: Glaciers that are seated in deep submarine basins  [#permalink]

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New post 27 Jun 2013, 16:45
2
1
guerrero25 wrote:
Glaciers that are seated in deep submarine basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating in the last decades.

(A)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating
(B)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreated
(C)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and are rapidly retreating
(D)basins, vulnerable to small changes in ocean temperature, occurred over the 20th century and have been rapidly retreating
(E)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and have been rapidly retreating

OA to follow


IMO E.

IN THE GIVEN SENTENCE THE PART " such as those that occurred over the 20th century"==>this is a modifier.hence we can remove this.
sentence becomes:
Glaciers that are seated in deep submarine basins are vulnerable to small changes in ocean temperature have been rapidly retreating [/u]in the last decades.==> the error in this sentence is that two verbs are there and one subject
subject: glaciers....verbs: are vulnerable...and have been......=>whenever two verbs are there and both verbs belongs to same single subject then we have to connect those two verbs using a conjunction depending on the meaning of sentence.
more over in the last part of non underlined section we have: IN THE LAST DECADE===> THIS is a marker for present perfect tense...so use of HAVE (AS THE SUBJECT IS PLURAL).
NOW basing this two error (conjunction is required and use of have is required)we can eliminate A,B,AND C.

now left with D and E
(D)basins, vulnerable to small changes in ocean temperature, occurred over the 20th century and have been rapidly retreating==> HERE WE DONT HAVE THE VERB IN MAIN CLAUSE... and here.OCCURED ==> ACTING AS PAST PARTICIPLE.HENCE THIS ONE IS A FRAGMENT.
(E)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and have been rapidly retreating(CORRECT)

KUDOS if it helped.
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Re: Glaciers that are seated in deep submarine basins  [#permalink]

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New post 27 Jun 2013, 17:50
4
IMO, E

Glaciers that are seated in deep submarine basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating in the last decades.

(A)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating
Wrong. The structure is not parallel. X that are seated.....are vulnerable......., have been rapidly retreating.... ==> We need "and" before "have been".

(B)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreated
Wrong. Same as A. X that are seated.....are vulnerable......., have been rapidly retreated....==> We need "and" before "have been".

(C)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and are rapidly retreating
Wrong. The meaning is wrong, The Glaciers are not retreating (progressive tense), but they have been retreating (perfect progressive), because the action "retreating" initiated in the past (in last decades).

(D)basins, vulnerable to small changes in ocean temperature, occurred over the 20th century and have been rapidly retreating
Wrong. "occurred...." is not clear. It may modify "changes" or "Glaciers".

(E)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and have been rapidly retreating
IMO, correct. The structure is: X that are seated... are vulnerable.....and have been rapidly retreating.....in the last decades.

Waiting for OA.
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Re: Glaciers that are seated in deep submarine basins are  [#permalink]

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New post 01 Feb 2014, 10:32
guerrero25 wrote:
Glaciers that are seated in deep submarine basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating in the last decades.

(A)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreating
(B)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, have been rapidly retreated
(C)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and are rapidly retreating
(D)basins, vulnerable to small changes in ocean temperature, occurred over the 20th century and have been rapidly retreating
(E)basins are vulnerable to small changes in ocean temperature, such as those that occurred over the 20th century, and have been rapidly retreating


Between C and E we need have been past perfect as correct verb form to show that this beganin the past and continues to be he case in the present. Hence E is the best answer choice

Hope it helps
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Re: Glaciers that are seated in deep submarine basins are  [#permalink]

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New post 14 Mar 2018, 23:31
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Glaciers that are seated in deep submarine basins are &nbs [#permalink] 14 Mar 2018, 23:31
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Glaciers that are seated in deep submarine basins are

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