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# His studies of ice-polished rocks in his Alpine home land,

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His studies of ice-polished rocks in his Alpine home land, [#permalink]

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30 Jun 2003, 10:28
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Edit: This topic is now locked. Refer to http://gmatclub.com/forum/his-studies-o ... 66115.html for open discussion of this question.

His studies of ice-polished rocks in his Alpine home land, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

[Reveal] Spoiler:
It's either B or E. Is it due to idioms( in which vs. when) or since the age is in the past; it is unlikely that the great ice sheets existed in areas now. I know diction is important on GMAT. In ( now) temperate areas , does now function as an adjective?

Victor

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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13 Sep 2013, 22:46

His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

Meaning: the present Temperate areas had great ice sheets, acc. to studies done by LA

Error Analysis : past perfect is to be used when two related past events are there. Not seen in this case

POE: was not able to do completely.

I somehow got the answer, but i was not able to confidently apply three step process..pls help

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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17 Sep 2013, 07:59
shreys9 wrote:

His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

Meaning: the present Temperate areas had great ice sheets, acc. to studies done by LA

Error Analysis : past perfect is to be used when two related past events are there. Not seen in this case

POE: was not able to do completely.

I somehow got the answer, but i was not able to confidently apply three step process..pls help

Hi Shrey,

The complete solution to this question has already been presented by Shraddha. You can find it in the previous page of this thread.
http://gmatclub.com/forum/his-studies-of-ice-polished-rocks-in-his-alpine-home-land-1363-100.html#p1083257

Hope this helps!

Regards,
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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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26 Oct 2013, 02:29
egmat wrote:
Hi All,

His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

It is very important to understand the meaning of this sentence in order to ascertain whether we need past perfect tense in this sentence or not. In 1837, Louis Agassiz proposed the concept of an age in which great ice sheets existed in those areas that are now temperate areas. His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers led Agassiz to make this proposal.

We use past perfect tense to establish sequencing, that is to show out of two events in the past, which event took place earlier and which took place later. It is true that there are two events in this sentence and both took place in the past – “led” and “had existed”.
However when we use past perfect tense, we must keep in mind that in order to establish sequencing between the two events, they must be related. There should be some bearing of one event on the other.
In this sentence, Agassiz proposed the concept of ice age in 1837. And this age actually existed long time ago. However, what we must may heed is that even if Agassiz did not propose the concept of ice age, the fact does not change that ice age still existed. It is not that because Agassiz proposed the concept of ice age, that age came into being. Hence, existence of ice age has no bearing on the proposal of the concept. Hence, we have two independent actions here between which sequencing is just not required.

Error Analysis:
1. Since existence of ice age is a universal fact and did not depend upon the proposal of its concept, use of “had existed” is incorrect. We need simple past tense here.
2. In the presence of “now” already, “currently” is redundant.

POE:

Choice A: in which great ice sheets had existed in now currently temperate areas: Incorrect for the reasons stated above.

Choice B: in which great ice sheets existed in what are now temperate areas: Correct. Simple past tense establishes the fact that ice age did exist.

Choice C: when great ice sheets existed where there were areas now temperate: Incorrect. The temperate areas are still there. Using past tense “were” is incorrect.

Choice D: when great ice sheets had existed in current temperate areas: Incorrect. Same verb tense error as in Choice A.

Choice E: when great ice sheets existed in areas now that are temperate: Incorrect. The phrasing is not correct here. It should be “areas that are now temperate”.

PS – Use of both “in what” and “when” is correct in the context of this sentence.

1. Use past perfect tense only to establish sequencing between two related events.
2. Avoid redundancy in answer choices.
3. Be wary of the changes in the word that appear in the original sentence. These changes may lead to change in the meaning.

Hope this helps.
Thanks.

Here after 'age', don't you think 'when' is a better usage rather than 'in which' as 'age' indicates a time period in this question I think and when it's time 'when' suits better than anything else...
So the reason we select B over other choices is because rest of the options have other major errors. Right?

Look forward to hearing from you.

P.S: I actually chose E as B appeared to me as verbose
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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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30 Oct 2013, 04:58
Curly05 wrote:
His studies of ice-polished rocks in his Alpine home land, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

No doubt for B ==> only clear and precise sentence All of the other choices are wordy or not grammaticaly correct!

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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05 Nov 2013, 22:53
bagdbmba wrote:
egmat wrote:
Hi All,

His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

It is very important to understand the meaning of this sentence in order to ascertain whether we need past perfect tense in this sentence or not. In 1837, Louis Agassiz proposed the concept of an age in which great ice sheets existed in those areas that are now temperate areas. His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers led Agassiz to make this proposal.

We use past perfect tense to establish sequencing, that is to show out of two events in the past, which event took place earlier and which took place later. It is true that there are two events in this sentence and both took place in the past – “led” and “had existed”.
However when we use past perfect tense, we must keep in mind that in order to establish sequencing between the two events, they must be related. There should be some bearing of one event on the other.
In this sentence, Agassiz proposed the concept of ice age in 1837. And this age actually existed long time ago. However, what we must may heed is that even if Agassiz did not propose the concept of ice age, the fact does not change that ice age still existed. It is not that because Agassiz proposed the concept of ice age, that age came into being. Hence, existence of ice age has no bearing on the proposal of the concept. Hence, we have two independent actions here between which sequencing is just not required.

Error Analysis:
1. Since existence of ice age is a universal fact and did not depend upon the proposal of its concept, use of “had existed” is incorrect. We need simple past tense here.
2. In the presence of “now” already, “currently” is redundant.

POE:

Choice A: in which great ice sheets had existed in now currently temperate areas: Incorrect for the reasons stated above.

Choice B: in which great ice sheets existed in what are now temperate areas: Correct. Simple past tense establishes the fact that ice age did exist.

Choice C: when great ice sheets existed where there were areas now temperate: Incorrect. The temperate areas are still there. Using past tense “were” is incorrect.

Choice D: when great ice sheets had existed in current temperate areas: Incorrect. Same verb tense error as in Choice A.

Choice E: when great ice sheets existed in areas now that are temperate: Incorrect. The phrasing is not correct here. It should be “areas that are now temperate”.

PS – Use of both “in what” and “when” is correct in the context of this sentence.

1. Use past perfect tense only to establish sequencing between two related events.
2. Avoid redundancy in answer choices.
3. Be wary of the changes in the word that appear in the original sentence. These changes may lead to change in the meaning.

Hope this helps.
Thanks.

Here after 'age', don't you think 'when' is a better usage rather than 'in which' as 'age' indicates a time period in this question I think and when it's time 'when' suits better than anything else...
So the reason we select B over other choices is because rest of the options have other major errors. Right?

Look forward to hearing from you.

P.S: I actually chose E as B appeared to me as verbose

Any update on this?

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13 Nov 2013, 07:45
This topic is now locked. Refer to his-studies-of-ice-polished-rocks-to-spot-adverb-166115.html for open discussion of this question.

His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose' the concept of an age in which great ice sheets had existed in now currently temperate areas.

Analysis:

Meaning: Studies of Louis Agasiz on ice polished rocks led him to propose the concept of an age in which great ice sheets once existed but that areas are now temperate.

Clauses:
1.His studies of ice-polished rocks in his Alpine homeland
2.far outside the range of present-day glaciers
3.led Louis Agassiz in 1837 to propose' the concept of an age
4.in which great ice sheets had existed in now currently temperate areas.

The subject 'studies' have the verb 'led' and 'far outside the range of present-day glaciers' is modifying 'homeland'
In clause 4 - Great ice sheets have verb 'had existed'

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

Shouldn't the correct choice contains past perfect tense to disinguish between the events:
1. Studies led him to propose a concept and
2. Great ice sheets existed

the correct answer choice a per the solution is B.

since both these events are in the past, perfect tense should be used.

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Re: Official Guide 13 Q-72 [#permalink]

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13 Nov 2013, 07:47
ankit41 wrote:
His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose' the concept of an age in which great ice sheets had existed in now currently temperate areas.

Analysis:

Meaning: Studies of Louis Agasiz on ice polished rocks led him to propose the concept of an age in which great ice sheets once existed but that areas are now temperate.

Clauses:
1.His studies of ice-polished rocks in his Alpine homeland
2.far outside the range of present-day glaciers
3.led Louis Agassiz in 1837 to propose' the concept of an age
4.in which great ice sheets had existed in now currently temperate areas.

The subject 'studies' have the verb 'led' and 'far outside the range of present-day glaciers' is modifying 'homeland'
In clause 4 - Great ice sheets have verb 'had existed'

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

Shouldn't the correct choice contains past perfect tense to disinguish between the events:
1. Studies led him to propose a concept and
2. Great ice sheets existed

the correct answer choice a per the solution is B.

since both these events are in the past, perfect tense should be used.

Pls. read forum rules BEFORE posting (given in my signature) and edit your question and topic name.
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Re: Official Guide 13 Q-72 [#permalink]

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13 Nov 2013, 08:26
Hi

To use past perfect both the events (VERBS) should be related. Here the verbs ''led'' and ''had existed'' are not related to each other. They both are independent.

HIS STUDIES led him to propose a concept has no bearing on existence of ice sheets and vice versa.

The studies would have ''led'' his to a conclusion/concept even if the ice sheets did not exist. But, may be, the conclusion would have been a bit different one.

Please correct me if i am wrong.

P.S:

The sentence doesn't have 4 clauses. It only has 2. A clause MUST contain SV pair.

Hope this helps.
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Re: Official Guide 13 Q-72 [#permalink]

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15 Nov 2013, 06:19
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ankit41 wrote:
His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose' the concept of an age in which great ice sheets had existed in now currently temperate areas.

Analysis:

Meaning: Studies of Louis Agasiz on ice polished rocks led him to propose the concept of an age in which great ice sheets once existed but that areas are now temperate.

Clauses:
1.His studies of ice-polished rocks in his Alpine homeland
2.far outside the range of present-day glaciers
3.led Louis Agassiz in 1837 to propose' the concept of an age
4.in which great ice sheets had existed in now currently temperate areas.

The subject 'studies' have the verb 'led' and 'far outside the range of present-day glaciers' is modifying 'homeland'
In clause 4 - Great ice sheets have verb 'had existed'

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

Shouldn't the correct choice contains past perfect tense to disinguish between the events:
1. Studies led him to propose a concept and
2. Great ice sheets existed

the correct answer choice a per the solution is B.

since both these events are in the past, perfect tense should be used.

Hi Ankit,

A query similar to yours has already been addressed in the following post.

his-studies-of-ice-polished-rocks-in-his-alpine-home-land-1363-100.html#p1083257

Hope this helps

Regards,
Krishna
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Re: Official Guide 13 Q-72 [#permalink]

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21 Nov 2013, 01:27
Thanks egmat/Krishna for pointing that out.
I would request the original poster to continue the discussion on the original thread.
Thank you.
Post locked

egmat wrote:
ankit41 wrote:
His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose' the concept of an age in which great ice sheets had existed in now currently temperate areas.

Analysis:

Meaning: Studies of Louis Agasiz on ice polished rocks led him to propose the concept of an age in which great ice sheets once existed but that areas are now temperate.

Clauses:
1.His studies of ice-polished rocks in his Alpine homeland
2.far outside the range of present-day glaciers
3.led Louis Agassiz in 1837 to propose' the concept of an age
4.in which great ice sheets had existed in now currently temperate areas.

The subject 'studies' have the verb 'led' and 'far outside the range of present-day glaciers' is modifying 'homeland'
In clause 4 - Great ice sheets have verb 'had existed'

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

Shouldn't the correct choice contains past perfect tense to disinguish between the events:
1. Studies led him to propose a concept and
2. Great ice sheets existed

the correct answer choice a per the solution is B.

since both these events are in the past, perfect tense should be used.

Hi Ankit,

A query similar to yours has already been addressed in the following post.

his-studies-of-ice-polished-rocks-in-his-alpine-home-land-1363-100.html#p1083257

Hope this helps

Regards,
Krishna

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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28 Nov 2013, 06:26
guys dont we need a past participle here?

in A there is redundancy with NOW and currently, but with B, are the tenses proper?

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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05 Dec 2013, 09:17
bagdbmba wrote:
egmat wrote:

PS – Use of both “in what” and “when” is correct in the context of this sentence.

Here after 'age', don't you think 'when' is a better usage rather than 'in which' as 'age' indicates a time period in this question I think and when it's time 'when' suits better than anything else...
So the reason we select B over other choices is because rest of the options have other major errors. Right?

Look forward to hearing from you.

P.S: I actually chose E as B appeared to me as verbose

Hi bagdbmba,

Firstly, there was a typo in the original post.

The correct sentence is Use of both “in which” and “when” is correct in the context of this sentence.

It is also mentioned in the Official explanation for this sentence that both of them can be used interchangeably in this sentence.

So both "in which" and "when" are equally good in this sentence and there is no error with their usage.

The errors in the incorrect options were already pointed out in the previous explanation.

Hope this helps.

Regards,
Krishna
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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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07 Jan 2014, 07:46
Curly05 wrote:
His studies of ice-polished rocks in his Alpine home land, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

[Reveal] Spoiler:
It's either B or E. Is it due to idioms( in which vs. when) or since the age is in the past; it is unlikely that the great ice sheets existed in areas now. I know diction is important on GMAT. In ( now) temperate areas , does now function as an adjective?

Victor

"age... in which" is correct.. So that leaves us with A/B.. "now currently" is reduntant, so we go with B.

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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18 Apr 2014, 20:42
Stuck between B and E and I chose concision to pick B. Why is E wrong? [b]I can't really tell what "now that are temperate" in E is modifying?[/b]

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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20 Apr 2014, 07:16
After "an age", "in which" and "when" are not really distinguished in GMAT, so we can't use them as a split.
A) Wrong since we don't need both "now" and "currently" (same meaning)
C) "where there are areas now temperate" is wordy and redundant. Same reason for E.

Leave with B and D.

I think B is better coz there is no solid reason to support the past perfect in D. Remember that past perfect is used to describe an event that happens before another in the past. The description "an age in which ..." merely provides details about a single period rather than a series of events required for past perfect.

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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21 Apr 2014, 00:14
Curly05 wrote:
His studies of ice-polished rocks in his Alpine home land, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

[Reveal] Spoiler:
It's either B or E. Is it due to idioms( in which vs. when) or since the age is in the past; it is unlikely that the great ice sheets existed in areas now. I know diction is important on GMAT. In ( now) temperate areas , does now function as an adjective?

Victor

I have doubt regarding tense usage in the question.

My meaning analysis of the sentence is :-

1.Studies conducted by Louis in his homeland led him to propose in 1837 a concept of an age .
2.In this age great ice sheets existed in area that are now temperate area.

POE done in original sentence:-

1. I don't see error in tense usage , but due to redundancy now / currently.Option A is wrong.

How do I work on the tense and see no error:
1. As per my understanding of egmat course on tense :

-On the timeline , studies are done in the past , in 1837 ( past time ) Louis proposes the concept of an age.
- In this age ice sheets existed in areas.

Usage of past perfect tense as per me is Ok because :-

1. That age has now ceased to exist . so if we use simple past existed it would not convey the meaning.

1. Also I want clarity on the usage of ín which 'and 'when'

My current understanding is : Use 'When 'to refer time /time period.

Expert opinion would be great on each answer choice.

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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22 Apr 2014, 23:21
purnima wrote:
Curly05 wrote:
His studies of ice-polished rocks in his Alpine home land, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

[Reveal] Spoiler:
It's either B or E. Is it due to idioms( in which vs. when) or since the age is in the past; it is unlikely that the great ice sheets existed in areas now. I know diction is important on GMAT. In ( now) temperate areas , does now function as an adjective?

Victor

I have doubt regarding tense usage in the question.

My meaning analysis of the sentence is :-

1.Studies conducted by Louis in his homeland led him to propose in 1837 a concept of an age .
2.In this age great ice sheets existed in area that are now temperate area.

POE done in original sentence:-

1. I don't see error in tense usage , but due to redundancy now / currently.Option A is wrong.

How do I work on the tense and see no error:
1. As per my understanding of egmat course on tense :

-On the timeline , studies are done in the past , in 1837 ( past time ) Louis proposes the concept of an age.
- In this age ice sheets existed in areas.

Usage of past perfect tense as per me is Ok because :-

1. That age has now ceased to exist . so if we use simple past existed it would not convey the meaning.

1. Also I want clarity on the usage of ín which 'and 'when'

My current understanding is : Use 'When 'to refer time /time period.

Expert opinion would be great on each answer choice.

Dear Purnima,
Now as mentioned by Shraddha in her post, the use of the Past Perfect Tense is not appropriate in choice A.

As pointed out by Shraddha as well, we use the past perfect tense to establish or emphasize sequencing, that is to show which event took place earlier and which took place later. And mind you, these two events have to have a direct bearing on each other. For example:

• By the time I reached the theater, my friend had left from there.

In the above sentence, my friend left before I reached. I need to stress this sequencing as both the actions are related in terms of the direct impact the earlier action has on the latter . Because of my friends’ leaving earlier and my reaching later, it can be understood that we could not meet. However, does it make sense to use the Past Perfect tense when I say the following:

• Emily found out in 2001 that India had gotten its independence in the year 1947.

Now, arguably India’s independence happened before Emily found out about the same. But do the two events have a direct bearing on each other? Nope! Emily could have found out that fact about India’s history some other time as well, say in 1995. Does the timing of India’s independence and the timing of Emily’s finding out have a direct bearing on each other? No, they don’t! Do you need to emphasize or clarify the sequence of events here? No, you don’t!

Now, in the sentence at hand, it is true that there are two events that are set in different time-periods in the past. But my questions remain the same : Do we need to emphasize or clarify the timing of these events in terms of which event happened earlier and which happened later? Does the timing of the first event have a direct bearing on the second event?

As regards the following analysis by you:

That age has now ceased to exist . so if we use simple past existed it would not convey the meaning.

Why wouldn’t simple-past convey the meaning that the ice-age doesn’t exist anymore? What is the meaning when one says the following:

• We all boast of an era in which calm and peace existed among the various sects of the religion.

Now from the above sentence, is it not clear that the same calm and peace ceased to exist after that era?

Moving on, as mentioned by Krishna above, both “when” and “in which” can be used to modify time elements. However, if you observe, typically “in which” is used to modify longer periods of time, whereas “when” is used for relatively shorter time periods. Accordingly, you’ll see nouns such as “age” and “era” are normally modified by “in which”.

As regards posting analysis for each and every choice, Shraddha has already posted a detailed reply above. Please have a look at the same. In case you still have some questions, please feel free to post them here. However, when you do so, please make sure that you post your analysis of the various choices along with the same. We’ll take our discussion forward from there.

Regards,
Neeti.
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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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23 Apr 2014, 00:03
purnima wrote:
How do I work on the tense and see no error:
1. As per my understanding of egmat course on tense :

-On the timeline , studies are done in the past , in 1837 ( past time ) Louis proposes the concept of an age.
- In this age ice sheets existed in areas.

This might not be a correct analysis. Tense usage here is "not" dictated by when Louis Agassiz conducted studies; the sentence is about following two events:

(I) an age in which great ice sheets existed/had existed
(II) In those areas (where great ice sheets earlier existed), now there are temperate areas

Please note that the basic usage of past perfect is when there are two things, "both of which" have happened in the "past". In this case, (II) has "not" happened in the past (temperate areas "still" exist); so (II) did not happen in the past.

So, the usage of past perfect is not correct.

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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23 Jun 2014, 09:15
His studies of ice-polished rocks in his Alpine
homeland, far outside the range of present-day
glaciers, led Louis Agassiz in 1837 to propose the
concept of an age in which great ice sheets had
existed in now currently temperate areas.
(A) in which great ice sheets had existed in now
currently temperate areas
(B) in which great ice sheets existed in what are now
temperate areas
(C) when great ice sheets existed where there were
areas now temperate
(D) when great ice sheets had existed in current
temperate areas
(E) when great ice sheets existed in areas now that
are temperate

In above question, the 'great ice sheets existed' EVEN BEFORE Louis Agassiz studies 'led' him to propose the concept. So, why answer B is correct when correct verb tense showing sequence of events is 'had existed'.

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Re: His studies of ice-polished rocks in his Alpine home land, [#permalink]

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23 Jun 2014, 09:27
gennia wrote:
His studies of ice-polished rocks in his Alpine
homeland, far outside the range of present-day
glaciers, led Louis Agassiz in 1837 to propose the
concept of an age in which great ice sheets had
existed in now currently temperate areas.
(A) in which great ice sheets had existed in now
currently temperate areas
(B) in which great ice sheets existed in what are now
temperate areas
(C) when great ice sheets existed where there were
areas now temperate
(D) when great ice sheets had existed in current
temperate areas
(E) when great ice sheets existed in areas now that
are temperate

In above question, the 'great ice sheets existed' EVEN BEFORE Louis Agassiz studies 'led' him to propose the concept. So, why answer B is correct when correct verb tense showing sequence of events is 'had existed'.

Merging similar topics.

1. Rules for posting in Verbal forum.

2. Rules for posting in Quant forum
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Re: His studies of ice-polished rocks in his Alpine home land,   [#permalink] 23 Jun 2014, 09:27

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