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

It is currently 25 Aug 2019, 15:28

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

GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar

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

Hide Tags

Find Similar Topics 
Intern
Intern
avatar
B
Joined: 21 Dec 2016
Posts: 24
Location: United Kingdom
Concentration: Strategy
Schools: LBS, Imperial '20, LBS
GMAT 1: 680 Q45 V38
GPA: 3.41
GMAT ToolKit User
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 10 Jul 2019, 14:17
Hey gmat ninja,

Was wondering if you could break down c and d for me here as you usually do - question here: https://gmatclub.com/forum/sound-can-tr ... 77588.html

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities

(C) its acoustic energy prevented from dissipating by

(D) its acoustic energy prevented from being dissipated as a result of

Cheers
GMAT Club Verbal Expert
User avatar
D
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2776
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 15 Jul 2019, 14:15
1
sefwow wrote:
Hey gmat ninja,

Was wondering if you could break down c and d for me here as you usually do - question here: https://gmatclub.com/forum/sound-can-tr ... 77588.html

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities

(C) its acoustic energy prevented from dissipating by

(D) its acoustic energy prevented from being dissipated as a result of

Cheers

The most straightforward decision point here is meaning. If something dissipates, it disperses on its own -- like steam, for example.

If something is being dissipated, it sounds as though there's an outside force causing the dispersion -- a farmer spreading seeds, perhaps. In this case, we're talking about the acoustic energy of sound. It makes far more sense to write that this energy disperses on its own than that a third-party is sprinkling bits of sound through the air. Because "being dissipated" is illogical here, we can eliminate (D).

Note also, that "by" is a cleaner more concise way of expressing "as a result of." So while "as a result of" isn't inherently wrong, in a side-by-side comparison with "by," it's a clear loser.

I hope that helps!
_________________
GMAT/GRE tutor @ www.gmatninja.com (we're hiring!) | GMAT Club Verbal Expert | Instagram | Blog | Bad at PMs

Beginners' guides to GMAT verbal: RC | CR | SC

YouTube LIVE verbal webinars: Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations: All QOTDs | Subscribe via email | RSS

Need an expert reply? Hit the request verbal experts' reply button; be specific about your question, and tag @GMATNinja. Priority is always given to official GMAT questions.

SC articles & resources: How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

RC, CR, and other articles & resources: All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal
Intern
Intern
avatar
B
Joined: 05 Jun 2018
Posts: 32
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 15 Jul 2019, 18:43
Hi,

Can you please tell me as to how to figure out if the modifier is modifying the last word, the first word of the noun phrase or the whole clause?

Posted from my mobile device
Intern
Intern
avatar
B
Joined: 21 Dec 2016
Posts: 24
Location: United Kingdom
Concentration: Strategy
Schools: LBS, Imperial '20, LBS
GMAT 1: 680 Q45 V38
GPA: 3.41
GMAT ToolKit User
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 17 Jul 2019, 07:00
1
1
GMATNinja wrote:
sefwow wrote:
Hey gmat ninja,

Was wondering if you could break down c and d for me here as you usually do - question here: https://gmatclub.com/forum/sound-can-tr ... 77588.html

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities

(C) its acoustic energy prevented from dissipating by

(D) its acoustic energy prevented from being dissipated as a result of

Cheers

The most straightforward decision point here is meaning. If something dissipates, it disperses on its own -- like steam, for example.

If something is being dissipated, it sounds as though there's an outside force causing the dispersion -- a farmer spreading seeds, perhaps. In this case, we're talking about the acoustic energy of sound. It makes far more sense to write that this energy disperses on its own than that a third-party is sprinkling bits of sound through the air. Because "being dissipated" is illogical here, we can eliminate (D).

Note also, that "by" is a cleaner more concise way of expressing "as a result of." So while "as a result of" isn't inherently wrong, in a side-by-side comparison with "by," it's a clear loser.

I hope that helps!



Hey GMATNinja, no further questions but ended up sitting the gmat today and came out with a 720 (v41) - thank you for the help and keep doing what you're doing!
Manager
Manager
avatar
S
Joined: 23 Apr 2018
Posts: 114
Reviews Badge
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 18 Jul 2019, 06:47
1
I happened to read a statement, this makes me want to ask this to an expert, and I picked my favourite one for this...
GMATNinja
This is my Uncle John, who lives in NYC [Non Essential] it is fine
This is my Uncle John that lives in NYC [Essential] .. is this sentence correct ?or we need to use "who" for "uncle John"..
Thank you
Manager
Manager
avatar
S
Joined: 15 Jul 2016
Posts: 92
GMAT 1: 690 Q48 V36
CAT Tests
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 19 Jul 2019, 23:14
Hi GmatNinja,

I'm facing trouble with this official question.

The increased popularity and availability of televisions has led to the decline of regional dialects, language variations which originate from diverse ethnic and cultural heritages and perpetuated by geographic isolation.


(A) which originate from diverse ethnic and cultural heritages and perpetuated

(B) that originated from diverse ethnic and cultural heritages and perpetuated

(C) originated from diverse ethnic and cultural heritages and perpetuated

(D) originating from diverse ethnic and cultural heritages and perpetuated

(E) originating from diverse ethnic and cultural heritages and perpetuating

I'm confused between C & D. I know the rule that in //ism, the modifiers can be in different form, however, I'm facing trouble recognizing why originated is not a modifier but verb ?

Thankyou!!
_________________
Please give Kudos if you agree with my approach :)
Manager
Manager
avatar
S
Joined: 23 Apr 2018
Posts: 114
Reviews Badge
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 20 Jul 2019, 03:24
578vishnu wrote:
Hi GmatNinja,

I'm facing trouble with this official question.

The increased popularity and availability of televisions has led to the decline of regional dialects, language variations which originate from diverse ethnic and cultural heritages and perpetuated by geographic isolation.


(A) which originate from diverse ethnic and cultural heritages and perpetuated

(B) that originated from diverse ethnic and cultural heritages and perpetuated

(C) originated from diverse ethnic and cultural heritages and perpetuated

(D) originating from diverse ethnic and cultural heritages and perpetuated

(E) originating from diverse ethnic and cultural heritages and perpetuating

I'm confused between C & D. I know the rule that in //ism, the modifiers can be in different form, however, I'm facing trouble recognizing why originated is not a modifier but verb ?

Thankyou!!


Hey man, is D the answer ?

the list is false parallelism, carefully re-read the sentence and break it down..

The increase and popularity of something has led to
1. decline of regional dialects
---------- these are originating from two things
a) diverse ethnic
and
b) cultural heritages

this list is over now.. (see there are no commas too, between these lists..just "and" a parallelism marker..
X------------- X
now the original list..which is affected by the subject of sentence (increase and popularity)

2. perpetuated by geographic isolation

this according to me should be the ideal list, as "diverse ethnic and cultural heritages" can't be parallel to "perpetuated" or "decline" ; these two can be parallel, as they are similar words or "verbs" if you like jargon :P

/// my question is why we don't see a "have" as the verb of the subject, and "are" before "perpetuated" ... is this question from an official source ?
Manager
Manager
avatar
S
Joined: 15 Jul 2016
Posts: 92
GMAT 1: 690 Q48 V36
CAT Tests
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 20 Jul 2019, 03:50
Shrey9 wrote:
578vishnu wrote:
Hi GmatNinja,

I'm facing trouble with this official question.

The increased popularity and availability of televisions has led to the decline of regional dialects, language variations which originate from diverse ethnic and cultural heritages and perpetuated by geographic isolation.


(A) which originate from diverse ethnic and cultural heritages and perpetuated

(B) that originated from diverse ethnic and cultural heritages and perpetuated

(C) originated from diverse ethnic and cultural heritages and perpetuated

(D) originating from diverse ethnic and cultural heritages and perpetuated

(E) originating from diverse ethnic and cultural heritages and perpetuating

I'm confused between C & D. I know the rule that in //ism, the modifiers can be in different form, however, I'm facing trouble recognizing why originated is not a modifier but verb ?

Thankyou!!


Hey man, is D the answer ?

the list is false parallelism, carefully re-read the sentence and break it down..

The increase and popularity of something has led to
1. decline of regional dialects
---------- these are originating from two things
a) diverse ethnic
and
b) cultural heritages

this list is over now.. (see there are no commas too, between these lists..just "and" a parallelism marker..
X------------- X
now the original list..which is affected by the subject of sentence (increase and popularity)

2. perpetuated by geographic isolation

this according to me should be the ideal list, as "diverse ethnic and cultural heritages" can't be parallel to "perpetuated" or "decline" ; these two can be parallel, as they are similar words or "verbs" if you like jargon :P

/// my question is why we don't see a "have" as the verb of the subject, and "are" before "perpetuated" ... is this question from an official source ?


Yes, GMATPREP.

GMATNinja egmat daagh please help!
_________________
Please give Kudos if you agree with my approach :)
Intern
Intern
avatar
B
Joined: 26 May 2019
Posts: 2
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 20 Jul 2019, 21:04
Hi Charles,

I faced a question in a mock that I was unable to solve. Can you please provide an explanation for this?

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.

1. 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

2. 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

3. 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

4. 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

5. 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

Correct answer is [A], and i can't understand why?
Manager
Manager
avatar
S
Joined: 23 Apr 2018
Posts: 114
Reviews Badge
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 21 Jul 2019, 05:22
Mallard wrote:
Hi Charles,

I faced a question in a mock that I was unable to solve. Can you please provide an explanation for this?

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.

1. 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

2. 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

3. 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

4. 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

5. 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

Correct answer is [A], and i can't understand why?


Hey,
if you marked B, then you are aware of most of the errors in other options : usage of "are" when subject is singular ("the discovery") and, "core, rotating ...." changes the meaning in a funny way.

But between, B and A
look at the last part of B) "and the formation and periodic reversal in direction of Earth's magnetic field"

This says that discovery is responsible for the "formation and periodic reversal in direction " .....

A discovery can't change something's direction ...
Therefore, A ) also with a parallel list of "of" is the right answer..

But I picked B), at first - just to tell you- you are not alone, its a tricky one.
Hope the experts clear more doubts, if any.
Intern
Intern
avatar
B
Joined: 09 Jul 2018
Posts: 4
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 25 Jul 2019, 09:46
Hi GMATNinja,

In Manhattan SC 4th edition, it is given that -
Preposition + Simple Gerund is a verb modifier.
Ex. I lifted the weight by concentrating.
This modifier applies to both the verb and the verb's subject.
"by concentrating" is modifying the verb "lifted" and subject of verb makes sense with modifier - I was concentrating.

But I am unable to apply the above in ex - Mother keeps children from watching television .
"from watching television" is modifying the verb "keeps", but it does not make sense with subject "Mother".

Please explain.
GMAT Club Verbal Expert
User avatar
D
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2776
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 11 Aug 2019, 14:12
1
1
Shrey9 wrote:
I happened to read a statement, this makes me want to ask this to an expert, and I picked my favourite one for this...
GMATNinja
This is my Uncle John, who lives in NYC [Non Essential] it is fine
This is my Uncle John that lives in NYC [Essential] .. is this sentence correct ?or we need to use "who" for "uncle John"..
Thank you

Fundamentally, I don't think there's anything wrong with using "that" to describe a person or people. So either of these are reasonable:

  • "The man who consumed too much bourbon in his youth mistook his toddler for a stuffed ostrich."
  • "The man that consumed too much bourbon in his youth mistook his toddler for a stuffed ostrich."

Both seem fine to me. Just as importantly, I've never seen an official GMAT SC question that forces you to choose between "who" and "that."

For whatever it's worth, "who" can be the beginning of either an essential or non-essential modifier:

  • "The man who consumed too much bourbon in his youth mistook his toddler for a stuffed ostrich." -- Essential modifier: without the modifier, we apparently wouldn't know which man mistook his toddler for a stuffed ostrich.
  • "The man, who consumed too much bourbon in his youth, mistook his toddler for a stuffed ostrich." -- Non-essential modifier: the part between the commas appears to be extra information, and without it, we'd still understand which man has problems recognizing his own kid.

As I've mentioned multiple times on this thread, the GMAT can't easily test the distinction between essential and non-essential modifiers, so I wouldn't worry about them too much.

I hope this helps!
_________________
GMAT/GRE tutor @ www.gmatninja.com (we're hiring!) | GMAT Club Verbal Expert | Instagram | Blog | Bad at PMs

Beginners' guides to GMAT verbal: RC | CR | SC

YouTube LIVE verbal webinars: Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations: All QOTDs | Subscribe via email | RSS

Need an expert reply? Hit the request verbal experts' reply button; be specific about your question, and tag @GMATNinja. Priority is always given to official GMAT questions.

SC articles & resources: How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

RC, CR, and other articles & resources: All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal
GMAT Club Verbal Expert
User avatar
D
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2776
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 11 Aug 2019, 14:23
nannunanni007 wrote:
Hi GMATNinja,

In Manhattan SC 4th edition, it is given that -
Preposition + Simple Gerund is a verb modifier.
Ex. I lifted the weight by concentrating.
This modifier applies to both the verb and the verb's subject.
"by concentrating" is modifying the verb "lifted" and subject of verb makes sense with modifier - I was concentrating.

But I am unable to apply the above in ex - Mother keeps children from watching television .
"from watching television" is modifying the verb "keeps", but it does not make sense with subject "Mother".

Please explain.

For starters, I can't quite figure out how this would reasonably be useful for answering an actual GMAT SC question. Sure, preposition + gerund constructions are common in English; I've also never thought about them for even a moment in almost 20 years of teaching test prep and English. So unless you can find an official GMAT question that uses this issue as a major decision point, it's probably not worth worrying about.

I also think you might have answered your own question: you said that the preposition + gerund is a verb modifier, right? Basically, it gives more information about the action in the sentence. That's true if we say "I lifted the weight by spraining multiple muscles", and it's also true if we say "Mother keeps children from watching television." In the latter example, "from watching television" is giving us more information about what, exactly, Mother is doing.

But again: I'm not sure how this issue would lead you to make mistakes on the GMAT.

I hope this helps a bit!
_________________
GMAT/GRE tutor @ www.gmatninja.com (we're hiring!) | GMAT Club Verbal Expert | Instagram | Blog | Bad at PMs

Beginners' guides to GMAT verbal: RC | CR | SC

YouTube LIVE verbal webinars: Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations: All QOTDs | Subscribe via email | RSS

Need an expert reply? Hit the request verbal experts' reply button; be specific about your question, and tag @GMATNinja. Priority is always given to official GMAT questions.

SC articles & resources: How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

RC, CR, and other articles & resources: All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal
GMAT Club Verbal Expert
User avatar
D
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2776
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 11 Aug 2019, 14:34
Mallard wrote:
Hi Charles,

I faced a question in a mock that I was unable to solve. Can you please provide an explanation for this?

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.

1. 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

2. 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

3. 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

4. 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

5. 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

Correct answer is [A], and i can't understand why?

SC is less about why the correct answer is right than why the incorrect options are wrong. The key here, as Shrey9 notes below, is the parallel construction demanded by the multiple uses of "and," and how this construction shapes the meaning of the sentence.

First, take a look at (A), stripped down:

    "The discovery [long modifier] 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."

Because "of the formation" ("preposition + noun") comes right after "and" we want a similar construction to precede it. In this case, we find "of the flow of heat." Now we want to ask ourselves if these two elements are logically parallel. And it makes perfect sense that the discovery is responsible for advancing studies of two things: (1) of the flow of heat and (2) of the formation and reversal of the earth's magnetic field. So keep (A).

Now compare that with all the other options. (B), (C), and (D) all lack the "of" before "formation." Is the preposition absolutely mandatory in a grammatical sense? No. But because the sentence is so complicated, it becomes very very difficult to see that the discovery is responsible for advancing studies of two separate elements if we don't include "of" before both of them. This confusion is enough to get rid of these options, but if you're skeptical, let's find a more concrete error in each:

Quote:
(B) The discovery that Earth's inner 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

Here, the "comma + and" creates the expectation that we're going to be treated to new information, potentially unrelated to what we've seen thus far. Put another way, it sounds as though "the discovery" is responsible only for advancing studies of how heat flows, and then there's this new clause about "the formation." But there's no verb to go with "formation!"

When we look back at the sentence, it appears that the discovery is responsible for "advancing studies" and for "the formation" itself. My physics is a little rusty, but I'm confident that a discovery can't be responsible for the formation of a magnetic field. That's illogical, so get rid of (B).

Both (C) and (D) have the same subject-verb agreement error: "The discovery... are responsible," so those are out.

And here's (E):
Quote:
The discovery that Earth's inner 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.

First, it sounds like the "earth's inner core" is itself responsible for advancing studies. Worse, there's no main verb here to go with the subject "the discovery." So this is illogical and ungrammatical. (E) is out, and (A) is our winner.

I hope that helps!
_________________
GMAT/GRE tutor @ www.gmatninja.com (we're hiring!) | GMAT Club Verbal Expert | Instagram | Blog | Bad at PMs

Beginners' guides to GMAT verbal: RC | CR | SC

YouTube LIVE verbal webinars: Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations: All QOTDs | Subscribe via email | RSS

Need an expert reply? Hit the request verbal experts' reply button; be specific about your question, and tag @GMATNinja. Priority is always given to official GMAT questions.

SC articles & resources: How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

RC, CR, and other articles & resources: All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal
Manager
Manager
User avatar
S
Joined: 09 May 2017
Posts: 191
Location: Iran (Islamic Republic of)
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 12 Aug 2019, 01:31
Hi Mr.Charles
I would be happy if you answer this question.

https://gmatclub.com/forum/neanderthals ... l#p2335090



Neanderthals had a vocal tract that resembled those of the apes and so were probably without language, a shortcoming that may explain why they were supplanted by our own species.
correct =(B) Neanderthals had a vocal tract resembling an ape’s



please explain how "resembling" can modify a thing in the past ??????? I SAW "-ing" modifier only in present tense be correct and many question wrong because of using -ing modifier in past .......BUT in this case it use for past tense !

in other word = "a vocal tract that resemble an ape's" or "a vocal tract that resembled an ape's" which is correct.? :please
tnx in advance.
_________________
behind your feelings there is nothing, but behind every principle is a promise. "Eric"
I used a lot of LSAT CR. At the same time it was important to switch back to GMAT CR before exam
because reasoning is different and you need to adjust your CR skills to GMAT .
https://gmatclub.com/forum/killer-rc-the-10-hardest-reading-comprehension-passages-of-all-time-302318.html#p2334505
https://gmatclub.com/forum/bunuel-signature-collection-the-next-generation-170062.html
Intern
Intern
avatar
B
Joined: 19 Jun 2019
Posts: 1
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 12 Aug 2019, 21:54
Hi Charles,

I am going to give my GMAT exam in December. I have given three mock tests and in those, I have scored 590(Q40, V29-Official GMAT) in first, 560(Q33 V31) in second and 570(Q33,v31).
While I was analyzing these mocks, I scored poorly in SC and RC.
So can you pls suggest my a study plan for SC and RC for the next three month.What basics I need to cover and in how much time I should cover those topics
I have 3 hours to Study verbal on a weekday and 6 hours on weekends
I don't have any material right now except GMAT club SC book.

please help me in creating my study plan for the next three months
Intern
Intern
avatar
B
Joined: 22 Mar 2018
Posts: 16
Location: United States
GRE 1: Q150 V150
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 16 Aug 2019, 02:12
Hi GMAT Ninja,

I am confused regarding an idiom:
Distinguish x from y
Distinguish between x and y

Are they correct?

If they are, then do they have any specific usage?

Sincerely,
Thanks.

Posted from my mobile device
Manager
Manager
User avatar
S
Joined: 09 May 2017
Posts: 191
Location: Iran (Islamic Republic of)
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 16 Aug 2019, 02:19
1
nishantbhatt wrote:
Hi GMAT Ninja,

I am confused regarding an idiom:
Distinguish x from y
Distinguish between x and y

Are they correct?

If they are, then do they have any specific usage?

Sincerely,
Thanks.

Posted from my mobile device

let me answer you quickly ..... I am sorry ninja !
if you see on gmat go for second Distinguish between x and y
according to Mgmat and og =
https://gmatclub.com/forum/in-his-resea ... 39274.html
_________________
behind your feelings there is nothing, but behind every principle is a promise. "Eric"
I used a lot of LSAT CR. At the same time it was important to switch back to GMAT CR before exam
because reasoning is different and you need to adjust your CR skills to GMAT .
https://gmatclub.com/forum/killer-rc-the-10-hardest-reading-comprehension-passages-of-all-time-302318.html#p2334505
https://gmatclub.com/forum/bunuel-signature-collection-the-next-generation-170062.html
Intern
Intern
avatar
B
Joined: 17 Dec 2016
Posts: 1
CAT Tests
Re: GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 17 Aug 2019, 12:45
When releasing an animal that has lived in captivity back into a wild environment, zoologists can never be sure whether it will successfully adapt to its new habitat.

A. releasing an animal that has lived in captivity back into a wild environment, zoologists can never be sure whether it will successfully adapt to its new habitat

B. an animal that has lived in captivity is released back into a wild environment, zoologists can never be sure if it will successfully adapt to its new habitat

C. releasing an animal back into a wild environment that has lived in captivity, zoologists can never be sure whether it will successfully adapt to its new habitat

D. an animal is released back into a wild environment that has lived in captivity, zoologists can never be sure if it will successfully adapt to its new habitat

E. an animal that has lived in captivity is released back into a wild environment, zoologists can never be sure whether it will successfully adapt to its new habitat or not

The answer is A but I marked E - is using ing form of verb with When appropriate? Why is E wrong?
Intern
Intern
avatar
B
Joined: 26 May 2019
Posts: 2
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar  [#permalink]

Show Tags

New post 19 Aug 2019, 10:20
Hi GMAT ninja,

Can you help me with the question below?

Since February, the Federal Reserve has raised its short-term interest rate target five times, and because of the economy's continued strength, analysts have been predicting for weeks that the target will be raised again in November.

A. because of the economy's continued strength, analysts have been predicting for weeks that the target will

B. with the economy's strength continuing, analysts predicted for weeks that the target

C. because the economy continues strong, analysts predicted for weeks that the target would

D. due to the economy's continued strength, analysts have been predicting for weeks that the target

E. due to the fact of the economy's continued strength, analysts predicted for weeks that the target will


Correct answer is A, but i selected D. Can you tell me why is D incorrect?
GMAT Club Bot
GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar   [#permalink] 19 Aug 2019, 10:20

Go to page   Previous    1   2   3   4   5   6   7   8   9    Next  [ 163 posts ] 

Display posts from previous: Sort by

GMAT Ninja SC Expert - Ask Me Anything about GMAT SC and Grammar

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





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