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While many argue that we must reduce our dependence on fossil fuels by

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While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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While many argue that we must reduce our dependence on fossil fuels by spreading greater awareness about conservation and waste, others by proposing switching to renewable sources of energy to maintain current levels, and still others by contending that nuclear power is the best way to meet our energy needs.

A by proposing switching to renewable sources of energy to maintain current levels, and still others by contending
B by proposing a switch to renewable sources of energy to maintain current levels, and still others contend
C propose a switch to renewable sources of energy for maintaining current levels, and still others contend
D propose a switch to renewable sources of energy to maintain current levels, and still others by contending
E propose switching to renewable sources of energy to maintain current levels, and still others are contending
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 07 Feb 2018, 12:48
C for me as well ... Parallelism at play.

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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 07 Feb 2018, 13:36
I am also with c...
But use of " renewable sources to maintain " is prefer over for maintaining i think....

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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 08 Feb 2018, 15:37
I think C is incorrect because the false use of "for". "To" seems to be the better fit there.

However, I am aware that the construction in E with "are containing" doesn't appear to be parallel, but it still appeared to be the preferable option over answer choice C.

Perhaps, one of the experts can shed some light on this question :)
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 08 Feb 2018, 15:58
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Hi aaba,

Another great question! Let's tackle this one problem at a time, and determine how to get to the correct answer quickly!

The first thing we notice when looking at the answers quickly is how they begin: by proposing vs. propose. Since this is a comparison (one group believes X, while "others" believe Y). Using the phrase "by proposing" makes it sound like we're only talking about one group, not 3. So let's eliminate answers A & B because they don't convey the right meaning.

Now that we have it narrowed down to 3 possible answers, let's look at parallel structure - the most common grammar problem in GMAT questions that contain lists. For this question, the following need to be parallel:

others X / and still others Y

To make it easier to spot, I'll add the word "others" to the beginning of each phrase and highlight the two parts that need to be parallel:

C: others propose a switch to renewable sources of energy for maintaining current levels, and still others contend

Answer C does use parallel structure, but there is another problem with this answer: the phrase "for maintaining current levels." By doing this, it's unclear if the energy or the proposal will maintain current levels. Since it's unclear, this is INCORRECT.

D: others propose a switch to renewable sources of energy to maintain current levels, and still others by contending

Answer D is INCORRECT because it doesn't use parallel structure.

E: others propose switching to renewable sources of energy to maintain current levels, and still others are contending

Answer E is CORRECT because it uses parallel structure and clear language.
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 09 Feb 2018, 00:09
EMPOWERgmatVerbal wrote:
Hi aaba,

Another great question! Let's tackle this one problem at a time, and determine how to get to the correct answer quickly!

The first thing we notice when looking at the answers quickly is how they begin: by proposing vs. propose. Since this is a comparison (one group believes X, while "others" believe Y). Using the phrase "by proposing" makes it sound like we're only talking about one group, not 3. So let's eliminate answers A & B because they don't convey the right meaning.

Now that we have it narrowed down to 3 possible answers, let's look at parallel structure - the most common grammar problem in GMAT questions that contain lists. For this question, the following need to be parallel:

others X / and still others Y

To make it easier to spot, I'll add the word "others" to the beginning of each phrase and highlight the two parts that need to be parallel:

C: others propose a switch to renewable sources of energy for maintaining current levels, and still others contend

Answer C does use parallel structure, but there is another problem with this answer: the phrase "for maintaining current levels." By doing this, it's unclear if the energy or the proposal will maintain current levels. Since it's unclear, this is INCORRECT.

D: others propose a switch to renewable sources of energy to maintain current levels, and still others by contending

Answer D is INCORRECT because it doesn't use parallel structure.

E: others propose switching to renewable sources of energy to maintain current levels, and still others are contending

Answer E is CORRECT because it uses parallel structure and clear language.


I still don't understand how answer E maintains parallelism. And you have not addressed that issue either, you have simply stated that it uses parallel structure.
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 16 Feb 2018, 02:36
Hello GMATNinja,

Sire, in this how is option E parallel and C not parallel.

I agree in option C "for maintaining" is wrong - we need "to maintain" to show purpose - but there is bigger issue, parallelism, in E than C.

Argue ..., propose ... and contend --> Nice parallel structure - C
Argue ..., propose ... and are contending --> Doesn't look nice - E

--Why do we need a present continuous when simple present does the job perfectly?

Please throw some light on this issue.
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While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 17 Feb 2018, 20:22
While many argue that we must reduce our dependence on fossil fuels by spreading greater awareness about conservation and waste, others by proposing switching to renewable sources of energy to maintain current levels, and still others by contending that nuclear power is the best way to meet our energy needs.

A by proposing switching to renewable sources of energy to maintain current levels, and still others by contending - parallelism issue
B by proposing a switch to renewable sources of energy to maintain current levels, and still others contend - parallelism issue
C propose a switch to renewable sources of energy for maintaining current levels, and still others contend - for maintaining does not show purpose
D propose a switch to renewable sources of energy to maintain current levels, and still others by contending - parallelism issue
E propose switching to renewable sources of energy to maintain current levels, and still others are contending - Is present continuous tense are contending needed here?




AjiteshArun , GMATNinja ,egmat , mikemcgarry , daagh , sayantanc2k , other experts -Can you please help to select between C and E? I chose C over E
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 17 Feb 2018, 22:45
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#parallelism

A. " by proposing " absolutely wrong
B. Same as A
C. Right :. It should be " contend that " not " contending that"
D. Improper usage of " contending"
E. Same as D

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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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Skywalker18 wrote:
While many argue that we must reduce our dependence on fossil fuels by spreading greater awareness about conservation and waste, others by proposing switching to renewable sources of energy to maintain current levels, and still others by contending that nuclear power is the best way to meet our energy needs.

A by proposing switching to renewable sources of energy to maintain current levels, and still others by contending - parallelism issue
B by proposing a switch to renewable sources of energy to maintain current levels, and still others contend - parallelism issue
C propose a switch to renewable sources of energy for maintaining current levels, and still others contend - for maintaining does not show purpose
D propose a switch to renewable sources of energy to maintain current levels, and still others by contending - parallelism issue
E propose switching to renewable sources of energy to maintain current levels, and still others are contending - Is present continuous tense are contending needed here?

AjiteshArun , GMATNinja ,egmat , mikemcgarry , daagh , sayantanc2k , other experts -Can you please help to select between C and E? I chose C over E


Hi Skywalker18!

This is really tricky, because both C and E use parallel structure correctly (as has been pointed out by others above). So it's hard to differentiate between the two. However, the reason that we choose E over C is that in choice C we have:

a switch to renewable sources of energy for maintaining current levels

This is a case where we want an infinitive of purpose -- we are describing the purpose of something. It is incorrect to use "for" here -- we need to say "to maintain". It is not acceptable to substitute a [preposition] + [gerund] (like "for maintaining") for an infinitive of purpose. So for that reason, we eliminate C and choose E.

Hope that helps! :-)
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 13 May 2018, 05:53
gmatexam439 wrote:
Hello GMATNinja,

Sire, in this how is option E parallel and C not parallel.

I agree in option C "for maintaining" is wrong - we need "to maintain" to show purpose - but there is bigger issue, parallelism, in E than C.

Argue ..., propose ... and contend --> Nice parallel structure - C
Argue ..., propose ... and are contending --> Doesn't look nice - E

--Why do we need a present continuous when simple present does the job perfectly?

Please throw some light on this issue.



I have the same question, how is E maintaining parallelism? And isn't parallelism a bigger issue than "for maintaining" if we have to make a choice? Can experts please help?
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 13 May 2018, 07:06
Sir i didnt Understand the parallel structure here. Is is someting related to SVO
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 13 May 2018, 09:42
E: While many argue...., others propose...., and still others are....

Parallelism is between the 3 verbs in bold above.
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Re: While many argue that we must reduce our dependence on fossil fuels by [#permalink]

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New post 13 May 2018, 11:11
C propose a switch to renewable sources of energy for maintaining current levels, and still others contend - for maintaining does not show purpose

E propose switching to renewable sources of energyto maintain current levels, and still others are contending -

Both options C and E have parallel structure as indicated by the bold faced verbs. For parallelism to hold it is not necessary to have same tense of the verb.
But option E is preferred over C just because it uses infinitive to correctly show purpose.

Is this understanding correct, experts kindly comment.
Thanks in advance!
Re: While many argue that we must reduce our dependence on fossil fuels by   [#permalink] 13 May 2018, 11:11
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