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

It is currently 17 Jan 2019, 11:32

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
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winning strategy for a high GRE score

     January 17, 2019

     January 17, 2019

     08:00 AM PST

     09:00 AM PST

    Learn the winning strategy for a high GRE score — what do people who reach a high score do differently? We're going to share insights, tips and strategies from data we've collected from over 50,000 students who used examPAL.
  • Free GMAT Strategy Webinar

     January 19, 2019

     January 19, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

The discovery that Earths inner core rotates independently of and more

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

Hide Tags

 
Manager
Manager
avatar
Joined: 13 Aug 2009
Posts: 118
WE 1: 4 years in IT
The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 21 Nov 2010, 03:04
16
64
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

65% (01:12) correct 35% (01:31) wrong based on 2978 sessions

HideShow timer Statistics

The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

(A) core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field

(B) core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

(C) core rotates independently and more quickly than Earth’s outer layers are responsible for advancing studies of how heat from the inner core flows through the outer planet, and how Earth’s magnetic field forms and the periodic reversal of its direction

(D) core, rotating independently and more quickly than Earth’s outer layers, are responsible for advancing studies of the flow of heat from the inner through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

(E) core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction

https://www.nytimes.com/1996/12/17/science/earth-s-core-a-planet-within-the-planet-is-spun-by-twin-streams-of-molten-iron.html

Most notably, the discovery of the inner core's rotation is advancing studies of how heat flows through the planet, how the interior evolved over the ages and how the Earth's magnetic field forms and periodically reverses.
Most Helpful Expert Reply
Retired Moderator
User avatar
D
Status: worked for Kaplan's associates, but now on my own, free and flying
Joined: 19 Feb 2007
Posts: 4615
Location: India
WE: Education (Education)
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 21 Nov 2010, 07:43
33
5
A somewhat intimidating S-V agreement and parallelism question here
The first clue is that the subject is the discovery, a singular and therefore the main verb will be -is - So eliminate C and D

The discovery is responsible for advancing the studies (1. of the flow of heat 2. of the formation and periodic reversal) Choice A only maintains the prepositional parallelism.
B misses the parallel – of - in the second part.
E distorts the parallelism by stating -of how – in the second part
_________________

you can know a lot about something but not really understand it."-- a quote
No one knows this better than a GMAT student does.
Narendran +9198845 44509

Most Helpful Community Reply
Orion Representative
User avatar
S
Joined: 26 Jul 2010
Posts: 341
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 22 Nov 2010, 11:44
27
4
Great work, daagh, and I like how you mentioned "intimidating" (and how werewolf agreed). I think that this is a great example of how intimidating problems can be made pretty efficient if you're looking for decision points. When I first looked at this one I scanned and noticed that three choices used "is" and two used "are" - I've just trained myself to notice the singular/plural differences of is/are; it/they; its/their; etc. So right away I could break down the S-V agreement to eliminate C and D.

Then I saw that another major difference as the addition of a modifier in E - I think because, while still thinking S-V agreement, I saw "core rotates" in both A and B but that E used a different construction. Reading the modifier, then, I noticed that it ruined the meaning of the sentence...it's the discovery THAT the core rotates that is responsible... Not "the discovery THAT the core is responsible...". So E was out, and then I could just look at the differences between A and B to find that B violated the parallel structure (and in doing so, left an awkward meaning) and that A was all that was left.


My point is this - train yourself to seek out the commonly-occurring decision points on these SC questions - singular/plural verbs or pronouns should start to jump off the screen at you, and then you can make decisions quickly and in smaller parts. On its own, this is a dense, long sentence with a lot underlined, but if you're paying attention to decision points I think it's a lot more manageable than it looks on the surface. Nice job, guys!
_________________

Brian

Curriculum Developer, Instructor, and Host of Veritas Prep On Demand

Save $100 on live Veritas Prep GMAT Courses and Admissions Consulting

Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.

Veritas Prep Reviews

General Discussion
Intern
Intern
avatar
Joined: 14 Nov 2010
Posts: 9
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 21 Nov 2010, 17:58
raghavs wrote:
The discovery that Earth’s inner core rotates independently of and more quickly than
Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner
through the outer planet and of the formation and periodic reversal in direction of Earth’s
magnetic field.

A. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of the formation and periodic reversal in direction of Earth’s
magnetic field
B. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field
C. core rotates independently and more quickly than Earth’s outer layers are
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and how Earth’s magnetic field forms and the periodic reversal
of its direction
D. core, rotating independently and more quickly than Earth’s outer layers, are
responsible for advancing studies of the flow of heat from the inner through the
outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field
E. core, rotating independently of and more quickly than Earth’s outer layers, is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of how Earth’s magnetic field forms and the periodic reversal of
its direction


"Independently of" and "quickly" are not parallal but still if A is right than perhaps A is right.
Intern
Intern
avatar
Joined: 31 Jul 2010
Posts: 28
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 21 Nov 2010, 20:36
2
Points to be noted are -

1) S/V agreement - The discovery that..... IS ( eliminate C and D)
2) || ism - is responsible for advancing studies OF X ... and OF Y ( Eliminate B and E)

A is the rt answer
_________________


Kudos Never costs your Pocket ! Give when u feel it worthy :idea:

Manager
Manager
avatar
Joined: 16 Jul 2010
Posts: 94
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 22 Nov 2010, 01:39
1
daagh wrote:
A somewhat intimidating S-V agreement and parallelism question here
The first clue is that the subject is the discovery, a singular and therefore the main verb will be -is - So eliminate C and D

The discovery is responsible for advancing the studies (1. of the flow of heat 2. of the formation and periodic reversal) Choice A only maintains the prepositional parallelism.
B misses the parallel – of - in the second part.
E distorts the parallelism by stating -of how – in the second part


Couldn't agree with you more on the intimidating part! You tackled this one nicely. Thanks!!
Retired Moderator
User avatar
D
Status: worked for Kaplan's associates, but now on my own, free and flying
Joined: 19 Feb 2007
Posts: 4615
Location: India
WE: Education (Education)
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 22 Nov 2010, 18:11
4
I agree in toto; This is the crux of Sentence Correction in GMAT: to be able to eliminate first a good number of choices, through identifying the more visible mistakes and then to go into nuances in the rest to narrow down to the best answer
_________________

you can know a lot about something but not really understand it."-- a quote
No one knows this better than a GMAT student does.
Narendran +9198845 44509

Intern
Intern
avatar
Joined: 22 May 2010
Posts: 29
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 19 Dec 2012, 00:42
Is (E) even a complete sentence?
The discovery that <core, [modifier], is responsible ...>
Subject is 'discovery', but there is no verb in (E)!
Senior Manager
Senior Manager
avatar
Joined: 29 Oct 2008
Posts: 351
Location: United States
Concentration: Marketing, Technology
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 22 Jun 2014, 01:44
1
daagh wrote:
A somewhat intimidating S-V agreement and parallelism question here
The first clue is that the subject is the discovery, a singular and therefore the main verb will be -is - So eliminate C and D

The discovery is responsible for advancing the studies (1. of the flow of heat 2. of the formation and periodic reversal) Choice A only maintains the prepositional parallelism.
B misses the parallel – of - in the second part.
E distorts the parallelism by stating -of how – in the second part
@daagh,Brian, Q1) regarding the prepositional parallelism, do we really need an "of" after "and"? Both of you have emphasized on this, so I would like to get this concept straight.

Wouldn't both of below sentences hold correct?
"Discovery is responsible for studies of heat flow and magnetic field".
"Discovery is responsible for studies of heat flow and of magnetic field".

Q2) This highlighted structure in A "the flow of heat from the inner through the outer planet" made me leave this choice. Shouldn't there be a qualified noun for the adjective "the inner" in the specified phrase?
Retired Moderator
avatar
Joined: 29 Oct 2013
Posts: 260
Concentration: Finance
GPA: 3.7
WE: Corporate Finance (Retail Banking)
GMAT ToolKit User
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 05 Aug 2014, 13:14
Its A.
B- drops second 'of'
C- just too many issues here. Just to quote one- the discovery is singular and hence should not take 'are'
D- again too many issues and same 'are' is wrong verb for singular subject of the discovery
E- parallelism is broken "the flow" should be followed by 'the formation and reversal'
_________________

Please contact me for super inexpensive quality private tutoring

My journey V46 and 750 -> http://gmatclub.com/forum/my-journey-to-46-on-verbal-750overall-171722.html#p1367876

Intern
Intern
avatar
Joined: 13 May 2013
Posts: 8
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 05 Aug 2014, 20:47
1
raghavs wrote:
The discovery that Earth’s inner core rotates independently of and more quickly than
Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner
through the outer planet and of the formation and periodic reversal in direction of Earth’s
magnetic field.
A. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of the formation and periodic reversal in direction of Earth’s
magnetic field
B. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field
C. core rotates independently and more quickly than Earth’s outer layers are
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and how Earth’s magnetic field forms and the periodic reversal
of its direction
D. core, rotating independently and more quickly than Earth’s outer layers, are
responsible for advancing studies of the flow of heat from the inner through the
outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field
E. core, rotating independently of and more quickly than Earth’s outer layers, is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of how Earth’s magnetic field forms and the periodic reversal of
its direction


A. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of the formation and periodic reversal in direction of Earth’s
magnetic field -correct prallele and correct use of verb form
B. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and (missing parallelism 'OF') the formation and periodic reversal in direction of Earth’s
magnetic field - incorrect
C. core rotates independently and more quickly than Earth’s outer layers are
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and how Earth’s magnetic field forms and the periodic reversal
of its direction - are here represents the discovery which is singlular. -incorrect
D. core, rotating independently and more quickly than Earth’s outer layers, are
responsible for advancing studies of the flow of heat from the inner through the
outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field - are here represents the discovery which is singlular. -incorrect
E. core, rotating independently of and more quickly than Earth’s outer layers, is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of how Earth’s magnetic field forms and the periodic reversal of
its direction
-- awkward sounding = out


IMO A
_________________

-------------------------------------
+1 Kudos if you find this answer helpful :)

Director
Director
User avatar
B
Joined: 03 Feb 2013
Posts: 848
Location: India
Concentration: Operations, Strategy
GMAT 1: 760 Q49 V44
GPA: 3.88
WE: Engineering (Computer Software)
Reviews Badge
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 23 Nov 2014, 01:53
4
The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

A. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the
outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field - Correct

B. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through
the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

How X and the formation -> are not parallel
,and -> Comma and suggests there are more than three items in the list
.

C. core rotates independently and more quickly than Earth’s outer layers are responsible for advancing studies of how heat from the inner core flows through
the outer planet, and how Earth’s magnetic field forms and the periodic reversal of its direction
The discovery - are

D. core, rotating independently and more quickly than Earth’s outer layers, are responsible for advancing studies of the flow of heat from the inner through the
outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field
The discovery - are

E. core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the
outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction

This option changes the meaning. The original sentence states that Discovery that Earth's Inner Core independently of and more quickly than Y is responsible.
In this option, The discovery of Earth's inner core is responsible.
"rotating independently of and more quickly than Earth’s outer layers" is a modifier for Inner Core.

_________________

Thanks,
Kinjal
My Debrief : http://gmatclub.com/forum/hardwork-never-gets-unrewarded-for-ever-189267.html#p1449379
My Application Experience : http://gmatclub.com/forum/hardwork-never-gets-unrewarded-for-ever-189267-40.html#p1516961
Linkedin : https://www.linkedin.com/in/kinjal-das/

Please click on Kudos, if you think the post is helpful

Manager
Manager
avatar
B
Joined: 27 Dec 2014
Posts: 62
Concentration: Leadership, Technology
Reviews Badge
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 28 Dec 2014, 11:07
A. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of the formation and periodic reversal in direction of Earth’s
magnetic field (Correct)

B. core rotates independently of and more quickly than Earth’s outer layers is
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field
Wrong because of parallelism - missing 'of' after and

C. core rotates independently and more quickly than Earth’s outer layers are
responsible for advancing studies of how heat from the inner core flows through
the outer planet, and how Earth’s magnetic field forms and the periodic reversal
of its direction
WRONG - Subject verb error - 'are' does not agree with 'discovery'

D. core, rotating independently and more quickly than Earth’s outer layers, are
responsible for advancing studies of the flow of heat from the inner through the
outer planet, and the formation and periodic reversal in direction of Earth’s
magnetic field
Same as (C). Also now the dependent clause starting with 'that' does not have a verb because 'rotating is turned into a verb-ing modifier

E. core, rotating independently of and more quickly than Earth’s outer layers, is
responsible for advancing studies of the flow of heat from the inner through the
outer planet and of how Earth’s magnetic field forms and the periodic reversal of
its direction
Same sub verb issue as (D)
_________________

Cheers!
-----------------------------
Please give kudos if you think it is worth it !

Manager
Manager
avatar
Joined: 24 Jul 2011
Posts: 181
Location: India
GMAT 1: 570 Q50 V19
GMAT 2: 650 Q49 V28
GMAT 3: 690 Q50 V34
WE: Information Technology (Investment Banking)
GMAT ToolKit User Reviews Badge
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 06 Sep 2015, 19:50
Hi EducationAisle,

As discussed long back (yes I am preparing again), wrt "10.9. Modifier-clauses ending in preposition are incorrect" of your book, we have "independently of" in the above construction? What am I missing?

Thanks
_________________

Middle of nowhere!

VP
VP
User avatar
P
Joined: 27 Mar 2010
Posts: 1060
Location: India
GPA: 3.31
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 08 Sep 2015, 21:32
rohitmanglik wrote:
Hi EducationAisle,

As discussed long back (yes I am preparing again), wrt "10.9. Modifier-clauses ending in preposition are incorrect" of your book, we have "independently of" in the above construction? What am I missing?

Hi Rohit, good morning! Section 10.9 of Sentence Correction Nirvana specifically mentions that clauses (especially relative clauses) ending in a preposition, are not preferred on GMAT.

Here, the sentence is:

The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

So, basically the core of the clause that we are discussing is:

Earth’s inner core rotates independently of and more quickly than Earth’s outer layers

In other words,

Earth’s inner core rotates independently of Earth’s outer layers.

Hopefully it is easy for you to see that this clause is not ending in a preposition.

Following are few examples from Official sources, where section 10.9 will in fact apply, since all the following have clauses that end in a preposition. Notice that in all these cases below, typically it is the relative clause that is ending in a preposition (hence our recommendation in the book you need to specifically look out for relative clauses ending in a preposition).

In each of the following cases, I have highlighted the incorrect modifier in red, and have also marked the preposition in bold.

GMATPrep (option B):
Because the numbers 1 and 2 and the letters A and B have connotations they are aware of, companies conducting consumer taste tests of foods or beverages typically choose numbers such as 697 or 483 to label the products.

OG 13, #83 (option D):
A report by the American Academy for the Advancement of Science has concluded that many of the dioxins that are currently uncontrolled and North Americans are exposed to come from the incineration of wastes.

OG Verbal Review, #20 (Option D):
Declining values for farm equipment and land, which farmers use as collateral to borrow against to get through the harvest season, are going to force many lenders to tighten or deny credit this spring.

p.s. I just happened to see this post of yours. Going forward, if you are looking for my specific inputs, request you to PM me.
_________________

Thanks,
Ashish
EducationAisle, Bangalore

Sentence Correction Nirvana available on Amazon.in and Flipkart

Now! Preview the entire Grammar Section of Sentence Correction Nirvana at pothi.com

Current Student
User avatar
Joined: 18 Oct 2014
Posts: 843
Location: United States
GMAT 1: 660 Q49 V31
GPA: 3.98
GMAT ToolKit User
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 24 May 2016, 14:37
raghavs wrote:
The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

A. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field

B. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

C. core rotates independently and more quickly than Earth’s outer layers are responsible for advancing studies of how heat from the inner core flows through the outer planet, and how Earth’s magnetic field forms and the periodic reversal of its direction

D. core, rotating independently and more quickly than Earth’s outer layers, are responsible for advancing studies of the flow of heat from the inner through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

E. core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction


'The discovery' is singular. C and D are out.

A. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field discovery is responsible for studies OF the flow of heat and OF the formation and reversal. Correct parallelism

B. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field. discovery is responsible for advancing studies OF how heat , and the formation and periodic reversal. OF is missing in the second part of sentence.

E. core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction . 'The discovery that earth's inner core is responsible for advancing studies' is not the intended meaning, 'The discovery that earth's inner core rotates is responsible' is the intended meaning
_________________

I welcome critical analysis of my post!! That will help me reach 700+

Senior Manager
Senior Manager
avatar
Joined: 05 Nov 2012
Posts: 444
Concentration: Technology, Other
GMAT ToolKit User Premium Member Reviews Badge
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 01 Aug 2016, 08:25
Top Contributor
I chose B over A because of the wording "the flow of heat from the inner through the outer planet " . Request inputs from other members on this...
Current Student
User avatar
B
Joined: 18 May 2016
Posts: 91
Location: India
GMAT 1: 700 Q49 V35
GMAT 2: 700 Q49 V35
WE: Consulting (Non-Profit and Government)
Reviews Badge
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 15 May 2017, 06:52
I also did not choose option A, as it is unclear what "inner" refers to, does it imply inner planet or inner layers or inner core? Experts please advise!

Posted from my mobile device
_________________

GMAT chronicles : 670-->660--> 700--> 650--> 680-->660--> 610-->700 (main exam)-->710--740-->700 (main exam again) -->Target 740+

Never never never never NEVER give up!!


I can and I will- watch me.

VP
VP
User avatar
P
Joined: 27 Mar 2010
Posts: 1060
Location: India
GPA: 3.31
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 15 May 2017, 08:54
GmatBawse wrote:
I also did not choose option A, as it is unclear what "inner" refers to, does it imply inner planet or inner layers or inner core? Experts please advise!

Posted from my mobile device

Hi GmatBawse, B has an issue with parallelism. Clearly, from a parallelism perspective, the structure of B is:

....responsible for advancing studies of X and Y, where:

i) X: how heat from the inner core flows through the outer planet, (this is a clause)

ii) Y: the formation and periodic reversal in direction of Earth’s magnetic field (this is a phrase)

Since X and Y are the logically similar parts of the sentence, these parts must be grammatically similar as well. However, while X is a clause, Y is a phrase. Hence, X and Y are not grammatically similar. So, option B fails the parallelism test.

p.s. Our book EducationAisle Sentence Correction Nirvana discusses Parallelism in Phrases and Clauses, its application and examples in significant detail. Have attached the corresponding section of the book, for your reference.
Attachments

Parallelism - Phrases and Clauses.pdf [22.62 KiB]
Downloaded 94 times

To download please login or register as a user


_________________

Thanks,
Ashish
EducationAisle, Bangalore

Sentence Correction Nirvana available on Amazon.in and Flipkart

Now! Preview the entire Grammar Section of Sentence Correction Nirvana at pothi.com

Retired Moderator
User avatar
P
Joined: 19 Mar 2014
Posts: 937
Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5
GMAT ToolKit User Premium Member
Re: The discovery that Earths inner core rotates independently of and more  [#permalink]

Show Tags

New post 01 Jul 2017, 13:48
raghavs wrote:
The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

A. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field

B. core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

C. core rotates independently and more quickly than Earth’s outer layers are responsible for advancing studies of how heat from the inner core flows through the outer planet, and how Earth’s magnetic field forms and the periodic reversal of its direction

D. core, rotating independently and more quickly than Earth’s outer layers, are responsible for advancing studies of the flow of heat from the inner through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

E. core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction


SV Error in C & D Discovery ==> Should be "is" not "are"

E misses the parallelism

B - misses parallelism too


Answer is A

_________________

"Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent."

Best AWA Template: https://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html#p470475

GMAT Club Bot
Re: The discovery that Earths inner core rotates independently of and more &nbs [#permalink] 01 Jul 2017, 13:48

Go to page    1   2    Next  [ 31 posts ] 

Display posts from previous: Sort by

The discovery that Earths inner core rotates independently of and more

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.