GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 26 Jun 2019, 03:25

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Gas hydrates, chemical compounds of water and natural gas, are increas

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Intern
Intern
User avatar
Joined: 02 Apr 2007
Posts: 24
Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post Updated on: 10 Dec 2018, 09:02
5
1
20
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

60% (01:31) correct 40% (01:47) wrong based on 783 sessions

HideShow timer Statistics


Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.


A. to be huge reservoirs of energy, possibly causing sea floor instability, and

B. to be huge reservoirs of energy, possibly causing sea floor instability, and even as

C. as huge reservoirs of energy, possibly causing sea floor instability, and

D. as huge reservoirs of energy, and the possible cause of sea floor instability,

E. as huge reservoirs of energy, as possible causes of sea floor instability, and even as

Originally posted by jho1 on 06 Jun 2007, 01:41.
Last edited by Bunuel on 10 Dec 2018, 09:02, edited 1 time in total.
Renamed the topic and edited the question.
Most Helpful Expert Reply
Manhattan Prep Instructor
User avatar
Affiliations: ManhattanGMAT
Joined: 21 Jan 2010
Posts: 335
Location: San Francisco
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 03 Jul 2010, 10:05
10
4
Hey All,

I get asked by PM to take this one on, so here I am. How goes it?

Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.

This question is about parallelism versus modifiers. We don't really want any modifiers here, so we have to get rid of answer choices that try to spin it that way.

A. to be huge reservoirs of energy, possibly causing sea floor instability, and
PROBLEM: Commas set off lists or modifiers. If it's a list, it's already unparallel (to be huge, causing, significant are not parallel). Modifier doesn't make sense either, however, as "causing" would be modifying the previous clauses. The fact that the hydrates may be reservoirs of energy is not causing sea floor instability, so that's out.

B. to be huge reservoirs of energy, possibly causing sea floor instability, and even as
PROBLEM: Same as above on every level.

C. as huge reservoirs of energy, possibly causing sea floor instability, and
PROBLEM: Same as above.

D. as huge reservoirs of energy, and the possible cause of sea floor instability,
PROBLEM: You only use COMMA followed by "and" at the end of a list of more than three things, not just two. Also, now the final section has become an appositive modifier. This is because the list MUST have ended after the "and", so the comma must be setting off a modifier. Because it's just a noun at the end, it could only be a noun modifying a noun ("Thomas Jefferson, our nation's third president, was awesome."). Obviously, the "instability" is not a "significant contributor to global warming"

E. as huge reservoirs of energy, as possible causes of sea floor instability, and even as
ANSWER: Look at the lovely parallelism "as, as, as", plus it finally makes sense!

Hope that helps!

-t
_________________

Tommy Wallach | Manhattan GMAT Instructor | San Francisco


Manhattan GMAT Discount | Manhattan GMAT Reviews
General Discussion
Intern
Intern
avatar
Joined: 11 Dec 2008
Posts: 20
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 14 Dec 2008, 06:29
1
vivektripathi wrote:
Gas hydrates, chemical compounds of water and natural gas, are increasingly being
studied for their potential to be huge reservoirs of energy, possibly causing sea floor
instability, and
significant contributors to global warming.
A. to be huge reservoirs of energy, possibly causing sea floor instability, and
B. to be huge reservoirs of energy, possibly causing sea floor instability, and even as
C. as huge reservoirs of energy, possibly causing sea floor instability, and
D. as huge reservoirs of energy, and the possible cause of sea floor instability,
E. as huge reservoirs of energy, as possible causes of sea floor instability, and even
as


Potential to be ~ / as ~ both seem ok. // Structure.
E seems to be the best choice.
Director
Director
avatar
Status: Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Joined: 26 Nov 2009
Posts: 669
Location: Singapore
Concentration: General Management, Finance
Schools: Chicago Booth - Class of 2015
GMAT ToolKit User
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 03 Jul 2010, 22:58
Tommy
Sorry I have to disagree. PROBLEM: You only use COMMA followed by "and" at the end of a list of more than three things, not just two. -----> D is wrong since the list has to be similar.
"huge reservoirs" is plural, so other items in the list have to be plural (technically)

D. as huge reservoirs of energy, and the possible cause of sea floor instability, ---> should be "causes" not "cause"

Pls correct me, if I'm wrong.

TommyWallach wrote:
D. as huge reservoirs of energy, and the possible cause of sea floor instability,
PROBLEM: You only use COMMA followed by "and" at the end of a list of more than three things, not just two. Also, now the final section has become an appositive modifier. This is because the list MUST have ended after the "and", so the comma must be setting off a modifier. Because it's just a noun at the end, it could only be a noun modifying a noun ("Thomas Jefferson, our nation's third president, was awesome."). Obviously, the "instability" is not a "significant contributor to global warming"
-t
Manhattan Prep Instructor
User avatar
Affiliations: ManhattanGMAT
Joined: 21 Jan 2010
Posts: 335
Location: San Francisco
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 03 Jul 2010, 23:41
Hey Nusma,

We don't disagree. You just hit on ANOTHER reason why D is problematic. But my reasons are both legitimate, and in the end, more grammatically central than the parallelism issue, because we do sometimes parallel a singular and a plural: "I have three cookies and a glass of orange juice." OR "They are terrible musicians and a lousy comedy team."

Hope that makes sense!

-t
_________________

Tommy Wallach | Manhattan GMAT Instructor | San Francisco


Manhattan GMAT Discount | Manhattan GMAT Reviews
Director
Director
avatar
Status: Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Joined: 26 Nov 2009
Posts: 669
Location: Singapore
Concentration: General Management, Finance
Schools: Chicago Booth - Class of 2015
GMAT ToolKit User
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 04 Jul 2010, 00:04
Hi tommy
Ohh ! I didn't see the modifier issue. :-D. instability, significant contributors to global warming. Thanks for pointing that out.
But I have seen gmat keeps the "noun number" same when listing the items. And especially maintains "the" any of the item starts with the determiner "the". The following SC has the same issue - A is wrong.

Rockets, like the airplane and the jet, were
rapidly improved during World War II.
(A) Rockets, like the airplane and the jet,
were
(B) The rocket, like airplanes and jets, was
(C) Rockets, like airplanes and jets, was
(D) The rocket, like the airplane and the jet,
were
(E) The rocket, like the airplane and the jet,
was

OA is E. Source Kaplan.
OE : That is, we can't compare the plural
“rockets”with the singular the “airplane and the jet,”
in (A); nor can we compare the singular “the rocket”
with the plural “airplanes and jets,” in (B).

cheers
Manhattan Prep Instructor
User avatar
Affiliations: ManhattanGMAT
Joined: 21 Jan 2010
Posts: 335
Location: San Francisco
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 04 Jul 2010, 01:22
Hey Nusma,

Honestly, I'm not 100% on the rule of this. In your example, we're comparing things to the subject, which has a plural verb. In that case, we need to match plural, because the verb is, in some ways, applying to both the original subject and the comparison terms. In the example we've been discussing, the items in question are the objects of the sentence, so there's no verb confusion. Anyway, there are plenty of reasons to cross off D. Stupid D. : )

-tommy
_________________

Tommy Wallach | Manhattan GMAT Instructor | San Francisco


Manhattan GMAT Discount | Manhattan GMAT Reviews
Director
Director
avatar
Joined: 16 Jul 2009
Posts: 917
Schools: CBS
WE 1: 4 years (Consulting)
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post Updated on: 30 Jul 2010, 12:12
nusmavrik wrote:
Hi tommy
Ohh ! I didn't see the modifier issue. :-D. instability, significant contributors to global warming. Thanks for pointing that out.
But I have seen gmat keeps the "noun number" same when listing the items. And especially maintains "the" any of the item starts with the determiner "the". The following SC has the same issue - A is wrong.

Rockets, like the airplane and the jet, were
rapidly improved during World War II.
(A) Rockets, like the airplane and the jet,
were
(B) The rocket, like airplanes and jets, was
(C) Rockets, like airplanes and jets, was
(D) The rocket, like the airplane and the jet,
were
(E) The rocket, like the airplane and the jet,
was

OA is E. Source Kaplan.
OE : That is, we can't compare the plural
“rockets”with the singular the “airplane and the jet,”
in (A); nor can we compare the singular “the rocket”
with the plural “airplanes and jets,” in (B).

cheers


And if it were:

Rockets, like airplanes and jets, were...

What would Kaplan say?
_________________
The sky is the limit
800 is the limit


GMAT Club Premium Membership - big benefits and savings

Originally posted by noboru on 30 Jul 2010, 04:54.
Last edited by noboru on 30 Jul 2010, 12:12, edited 1 time in total.
Manhattan Prep Instructor
User avatar
Affiliations: ManhattanGMAT
Joined: 21 Jan 2010
Posts: 335
Location: San Francisco
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 30 Jul 2010, 12:05
1
Hey Noburu,

That would definitely be wrong; most things between commas are not considered part of the main sentence/subject (the exception being in a list of three things, where the middle item WOULD be part of the main subject, assuming the list was the subject of the sentence: "Bread, cheese, and water were hard to come by during the war."

-t
_________________

Tommy Wallach | Manhattan GMAT Instructor | San Francisco


Manhattan GMAT Discount | Manhattan GMAT Reviews
Retired Moderator
User avatar
V
Status: worked for Kaplan's associates, but now on my own, free and flying
Joined: 19 Feb 2007
Posts: 4772
Location: India
WE: Education (Education)
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 10 Sep 2012, 08:08
3
Very interesting.

Point 1. Let me give a different dimension of //ism. How many things are the Gas Hydrates have the potential to be or pote4ntial as? Only two and not three as D and E point out: 1. Potential to be huge gas reservoirs and 2. Significant contributors. The intervening participial phrase ‘possibly causing sea instability’ is an adverbial modifier that modifies the previous clause in its entirety. It is therefore not essential to see what it modifies. So in my opinon, D and E are droppable in as much as they point out to three things as the GHs have the potential for while the text means only two factors.
Pont 2. Between to be and as. ‘Potential to be’ IMO, is kind of speculation. Something has the potential to be, but it is not exploited as of now. For all that the potential may even turn negative. On the contrary, ‘potential as’ is something that is confirmed. But the original note borders more on speculation considering them to potentials to be; and one of these factors is even a possible cause for some instability. That is the reason we have to drop C, D and E. In A and B. apparently, the intervening modifier looks inelegantly placed, but still is passable. In B, the addition of ‘even as’ is unnecessary and changes the meaning of the original text. So B is gone. A looks the best bet IMO.

My kudo to the original poster of this thread.
_________________
The Take-Away: Grammar First and Then the Rest
Manager
Manager
User avatar
Status: Prevent and prepare. Not repent and repair!!
Joined: 13 Feb 2010
Posts: 179
Location: India
Concentration: Technology, General Management
GPA: 3.75
WE: Sales (Telecommunications)
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 11 Sep 2012, 03:25
What is the OA. I am still confused between potential to be and potential as.

@daagh: Here I think potential to be is the right usage.
Ex- Sachin has the potential to be the captain
Sachin's potential as captain is questionable
So usage of example 1 is more suitable here.
_________________
I've failed over and over and over again in my life and that is why I succeed--Michael Jordan
Kudos drives a person to better himself every single time. So Pls give it generously
Wont give up till i hit a 700+
Retired Moderator
User avatar
V
Status: worked for Kaplan's associates, but now on my own, free and flying
Joined: 19 Feb 2007
Posts: 4772
Location: India
WE: Education (Education)
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 17 Sep 2012, 06:49
The point is, if GHs are reservoirs of energy that cause sea floor instability,, then A is correct (the phrase starting with “ possibly causing” is taken as a modifier). On the contrary, if GHs cause seafloor instability as a separate factor, then E is ok on the count of //ism alone, notwithstanding the intrusion of ‘even’ in that choice.
Coming to the factor of ‘the potential to be and the potential as’, if both are interchangeable as you have researched out, then GMAT may as well avoid this question altogether, not wanting to get caught in the muddle.
_________________
The Take-Away: Grammar First and Then the Rest
Director
Director
User avatar
G
Joined: 26 Oct 2016
Posts: 626
Location: United States
Concentration: Marketing, International Business
Schools: HBS '19
GMAT 1: 770 Q51 V44
GPA: 4
WE: Education (Education)
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 12 Aug 2017, 11:42
Potential to [verb], potential as [noun]. Both are correct idioms, given the verb "be" with "potential to" or the noun clause "huge source of energy" with "potential as"
Everything boils down to parallelism; (E) is the only answer choice where all three elements of the list are parallel "As huge sources....as possible causes...as significant contributors"
_________________
Thanks & Regards,
Anaira Mitch
Intern
Intern
avatar
B
Joined: 13 Mar 2016
Posts: 31
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 31 Oct 2017, 08:59
For those who are still unconvinced about A and E, i've thought critically about this.

The only way A is DEFINITELY wrong is an ambiguous modifier or worse, wrong modifier.

See below:

Gas hydrates are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.

What is possibly causing instability? Is it Gas hydrates? Is it Reservoirs or energy? We can't tell exactly WHAT is causing instability.

Hence go with E, which clearer that Gas Hydrates are being studied as 3 things.

tough one for sure. I got it wrong
Retired Moderator
User avatar
V
Joined: 28 Mar 2017
Posts: 1211
Location: India
GMAT 1: 730 Q49 V41
GPA: 4
Re: Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 02 Nov 2017, 11:36
Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.

A.to be huge reservoirs of energy, possibly causing sea floor instability, and -list is not parallel
B.to be huge reservoirs of energy, possibly causing sea floor instability, and even as -list is not parallel
C.as huge reservoirs of energy, possibly causing sea floor instability, and -list is not parallel
D.as huge reservoirs of energy, and the possible cause of sea floor instability, -list is not parallel
E.as huge reservoirs of energy, as possible causes of sea floor instability, and even as -Correct
_________________
SVP
SVP
User avatar
V
Status: It's near - I can see.
Joined: 13 Apr 2013
Posts: 1688
Location: India
Concentration: International Business, Operations
Schools: INSEAD Jan '19
GPA: 3.01
WE: Engineering (Real Estate)
Reviews Badge
Gas hydrates, chemical compounds of water and natural gas, are increas  [#permalink]

Show Tags

New post 04 Mar 2019, 10:35
jho1 wrote:
Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.


A. to be huge reservoirs of energy, possibly causing sea floor instability, and

B. to be huge reservoirs of energy, possibly causing sea floor instability, and even as

C. as huge reservoirs of energy, possibly causing sea floor instability, and

D. as huge reservoirs of energy, and the possible cause of sea floor instability,

E. as huge reservoirs of energy, as possible causes of sea floor instability, and even as


AjiteshArun

Why A is wrong? How do we know what is the correct intended meaning?

Point 1. I mean why "possibly causing sea floor instability" can't be a modifier modifying "reservoirs of energy".

Point 2. How do we know that this is a list of three items and not of two as Daagh said?

Point 3. "to be huge reservoirs of energy" and "significant contributors to global warming." (Are these two items parallel?)

Point 4. Do we require to repeat "to be" with "significant contributors to global warming" to make it parallel?


Hope I made myself clear.

_________________
"Do not watch clock; Do what it does. KEEP GOING."
GMAT Club Bot
Gas hydrates, chemical compounds of water and natural gas, are increas   [#permalink] 04 Mar 2019, 10:35
Display posts from previous: Sort by

Gas hydrates, chemical compounds of water and natural gas, are increas

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne