Last visit was: 19 Nov 2025, 11:08 It is currently 19 Nov 2025, 11:08
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
User avatar
egmat
User avatar
e-GMAT Representative
Joined: 02 Nov 2011
Last visit: 19 Nov 2025
Posts: 5,108
Own Kudos:
32,886
 [8]
Given Kudos: 700
GMAT Date: 08-19-2020
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 5,108
Kudos: 32,886
 [8]
2
Kudos
Add Kudos
6
Bookmarks
Bookmark this Post
User avatar
egmat
User avatar
e-GMAT Representative
Joined: 02 Nov 2011
Last visit: 19 Nov 2025
Posts: 5,108
Own Kudos:
32,886
 [1]
Given Kudos: 700
GMAT Date: 08-19-2020
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 5,108
Kudos: 32,886
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
jitbec
Joined: 06 Jun 2011
Last visit: 22 Aug 2013
Posts: 52
Own Kudos:
218
 [1]
Given Kudos: 15
Posts: 52
Kudos: 218
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
avatar
massivelavs
Joined: 22 Nov 2011
Last visit: 12 Mar 2012
Posts: 5
Own Kudos:
8
 [1]
Given Kudos: 1
Location: United States
Schools: Carroll '15
GMAT Date: 01-12-2012
GPA: 3.17
WE:Sales (Finance: Investment Banking)
Schools: Carroll '15
Posts: 5
Kudos: 8
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
The rise in American exports was possible because international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants.

A. international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants

HAD BEEN not necessary, stay in simple past "was possible" because x's were lowered, y were obtained (C)

B. America lowered international trade barriers and the use of automated robotic equipment in American manufacturing plants resulted in unprecedented gains in efficiency
meaning- not sure whether it was American lowering intl barriers or intl barriers globally, more importantly the use of x was not what made the rise possible, the gains in efficiency was one of the reasons

C. international trade barriers were lowered and unprecedented gains in efficiency were obtained through the use of automated robotic equipment in American manufacturing plants
Correct- meaning and verb tense

D. international trade barriers were lowered, obtaining unprecedented gains in efficiency through the automated use of robotic equipment in manufacturing plants of America
wrong modifier, not rise in exports

E. America lowered trade barriers internationally and the use of unprecedented automated robotic equipment in American manufacturing plants resulted in efficiency gains
meaning wrong with only America lowering and again robotic equip is not a reason
User avatar
egmat
User avatar
e-GMAT Representative
Joined: 02 Nov 2011
Last visit: 19 Nov 2025
Posts: 5,108
Own Kudos:
32,886
 [1]
Given Kudos: 700
GMAT Date: 08-19-2020
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 5,108
Kudos: 32,886
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
@jitbec - Congratulations. You win the OG Verbal review Solutions access for 1 month. Accurate and to the point analysis! Send me a PM with your e-GMAT user id information so that we can upgrade your account.

Quote:

egmat wrote:
The rise in American exports was possible because international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants.
    A. international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants
    B. America lowered international trade barriers and the use of automated robotic equipment in American manufacturing plants resulted in unprecedented gains in efficiency
    C. international trade barriers were lowered and unprecedented gains in efficiency were obtained through the use of automated robotic equipment in American manufacturing plants
    D. international trade barriers were lowered, obtaining unprecedented gains in efficiency through the automated use of robotic equipment in manufacturing plants of America
    E. America lowered trade barriers internationally and the use of unprecedented automated robotic equipment in American manufacturing plants resulted in efficiency gains

Here is the official explanation for this question:

Understand the Meaning of the Original Sentence



This sentence presents a cause and effect. The effect is – rise in American exports. There are two causes:
• international trade barriers were lowered
• unprecedented gains in efficiency were obtained. This was done through the use of automated robotic equipment in US plants.

Find the Errors in the Original Sentence


1. The risein American exportswas possible
2. because
international trade barriers were lowered and
unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants

All SV pairs are accounted for and agree in number. This sentence has verb tense error. Logically there is no reason to indicate one of the causes in simple past tense and the other cause in past perfect tense. There is no basis for such sequencing. Thus the verb – had been obtained – should be expressed as ‘were obtained’.

Review Answer Choices to do POE


Choice B – Grammatically Correct but Incorrect Choice – By changing the causes from passive voice to active voice, this choice adds information that is not present in the original choice. It is not stated that America lowered the international trade barriers. Thus, this choice is incorrect.

Choice C – Correct choice. The verb tense error has been corrected.

Choice D – This choice distorts the intended meaning. It links the two rather independent tasks in causal relationship. Per this choice, the international trade barriers were lowered and this led to achieving gains in efficiency through use of automatic equipment. This is neither logical nor the intended meaning.

Choice E – Grammatically Correct but Incorrect Choice – This choice repeats the error in Choice B. It further changes the intended meaning by using “unprecedented” to describe “automated robotic equipment” instead of “efficiency gains”.

TAKE AWAYS


1. Always understand the intended meaning of the original sentence.
2. It is very important to note ALL the information present in the sentence.
3. The correct choice should communicate ALL that information – no more and no less – in a grammatically correct manner.
avatar
agourav
Joined: 14 Nov 2008
Last visit: 07 Feb 2014
Posts: 24
Own Kudos:
Given Kudos: 1
Posts: 24
Kudos: 69
Kudos
Add Kudos
Bookmarks
Bookmark this Post
egmat



Here is the official explanation for this question:

Understand the Meaning of the Original Sentence



This sentence presents a cause and effect. The effect is – rise in American exports. There are two causes:
• international trade barriers were lowered
• unprecedented gains in efficiency were obtained. This was done through the use of automated robotic equipment in US plants.

Find the Errors in the Original Sentence


1. The risein American exportswas possible
2. because
international trade barriers were lowered and
unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants

All SV pairs are accounted for and agree in number. This sentence has verb tense error. Logically there is no reason to indicate one of the causes in simple past tense and the other cause in past perfect tense. There is no basis for such sequencing. Thus the verb – had been obtained – should be expressed as ‘were obtained’.

Review Answer Choices to do POE


Choice B – Grammatically Correct but Incorrect Choice – By changing the causes from passive voice to active voice, this choice adds information that is not present in the original choice. It is not stated that America lowered the international trade barriers. Thus, this choice is incorrect.

Choice C – Correct choice. The verb tense error has been corrected.

Choice D – This choice distorts the intended meaning. It links the two rather independent tasks in causal relationship. Per this choice, the international trade barriers were lowered and this led to achieving gains in efficiency through use of automatic equipment. This is neither logical nor the intended meaning.

Choice E – Grammatically Correct but Incorrect Choice – This choice repeats the error in Choice B. It further changes the intended meaning by using “unprecedented” to describe “automated robotic equipment” instead of “efficiency gains”.

TAKE AWAYS


1. Always understand the intended meaning of the original sentence.
2. It is very important to note ALL the information present in the sentence.
3. The correct choice should communicate ALL that information – no more and no less – in a grammatically correct manner.

I have a small doubt. Are the sentences B (America lowered international trade barriers and the use of automated robotic equipment in American manufacturing plants) and E(America lowered trade barriers internationally and the use of unprecedented automated robotic equipment in American manufacturing plants) grammatically parallel?
User avatar
mamboe
Joined: 04 Nov 2013
Last visit: 16 Nov 2014
Posts: 16
Own Kudos:
3
 [4]
Given Kudos: 1
Location: United States
GPA: 3.96
WE:Information Technology (Computer Software)
4
Kudos
Add Kudos
Bookmarks
Bookmark this Post
egmat
@jitbec - Congratulations. You win the OG Verbal review Solutions access for 1 month. Accurate and to the point analysis! Send me a PM with your e-GMAT user id information so that we can upgrade your account.

Quote:

egmat wrote:
The rise in American exports was possible because international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants.
    A. international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants
    B. America lowered international trade barriers and the use of automated robotic equipment in American manufacturing plants resulted in unprecedented gains in efficiency
    C. international trade barriers were lowered and unprecedented gains in efficiency were obtained through the use of automated robotic equipment in American manufacturing plants
    D. international trade barriers were lowered, obtaining unprecedented gains in efficiency through the automated use of robotic equipment in manufacturing plants of America
    E. America lowered trade barriers internationally and the use of unprecedented automated robotic equipment in American manufacturing plants resulted in efficiency gains

Here is the official explanation for this question:

Understand the Meaning of the Original Sentence



This sentence presents a cause and effect. The effect is – rise in American exports. There are two causes:
• international trade barriers were lowered
• unprecedented gains in efficiency were obtained. This was done through the use of automated robotic equipment in US plants.

Find the Errors in the Original Sentence


1. The risein American exportswas possible
2. because
international trade barriers were lowered and
unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants

All SV pairs are accounted for and agree in number. This sentence has verb tense error. Logically there is no reason to indicate one of the causes in simple past tense and the other cause in past perfect tense. There is no basis for such sequencing. Thus the verb – had been obtained – should be expressed as ‘were obtained’.

Review Answer Choices to do POE


Choice B – Grammatically Correct but Incorrect Choice – By changing the causes from passive voice to active voice, this choice adds information that is not present in the original choice. It is not stated that America lowered the international trade barriers. Thus, this choice is incorrect.

Choice C – Correct choice. The verb tense error has been corrected.

Choice D – This choice distorts the intended meaning. It links the two rather independent tasks in causal relationship. Per this choice, the international trade barriers were lowered and this led to achieving gains in efficiency through use of automatic equipment. This is neither logical nor the intended meaning.

Choice E – Grammatically Correct but Incorrect Choice – This choice repeats the error in Choice B. It further changes the intended meaning by using “unprecedented” to describe “automated robotic equipment” instead of “efficiency gains”.

TAKE AWAYS


1. Always understand the intended meaning of the original sentence.
2. It is very important to note ALL the information present in the sentence.
3. The correct choice should communicate ALL that information – no more and no less – in a grammatically correct manner.


looking at the sentence in the below format, im little confused.

isnt it possible that (2) has happened in time before that of (1)? Such that 1 (happening at presnt) and 2 (happened before 1) is causing the rise in american exports?


The rise in American exports was possible because

1.international trade barriers were lowered
and
2.unprecedented gains in efficiency had been obtained

through the use of automated robotic equipment in American manufacturing plants


Thanks,
M
User avatar
sachin0890
Joined: 16 Jun 2016
Last visit: 14 Dec 2017
Posts: 22
Own Kudos:
Given Kudos: 44
Concentration: Accounting
GMAT 1: 640 Q51 V24
GMAT 2: 730 Q51 V37
GMAT 2: 730 Q51 V37
Posts: 22
Kudos: 13
Kudos
Add Kudos
Bookmarks
Bookmark this Post
egmat
jitbec - Congratulations. You win the OG Verbal review Solutions access for 1 month. Accurate and to the point analysis! Send me a PM with your e-GMAT user id information so that we can upgrade your account.

Quote:

egmat wrote:
The rise in American exports was possible because international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants.
    A. international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants
    B. America lowered international trade barriers and the use of automated robotic equipment in American manufacturing plants resulted in unprecedented gains in efficiency
    C. international trade barriers were lowered and unprecedented gains in efficiency were obtained through the use of automated robotic equipment in American manufacturing plants
    D. international trade barriers were lowered, obtaining unprecedented gains in efficiency through the automated use of robotic equipment in manufacturing plants of America
    E. America lowered trade barriers internationally and the use of unprecedented automated robotic equipment in American manufacturing plants resulted in efficiency gains

Here is the official explanation for this question:

Understand the Meaning of the Original Sentence



This sentence presents a cause and effect. The effect is – rise in American exports. There are two causes:
• international trade barriers were lowered
• unprecedented gains in efficiency were obtained. This was done through the use of automated robotic equipment in US plants.

Find the Errors in the Original Sentence


1. The risein American exportswas possible
2. because
international trade barriers were lowered and
unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants

All SV pairs are accounted for and agree in number. This sentence has verb tense error. Logically there is no reason to indicate one of the causes in simple past tense and the other cause in past perfect tense. There is no basis for such sequencing. Thus the verb – had been obtained – should be expressed as ‘were obtained’.

Review Answer Choices to do POE


Choice B – Grammatically Correct but Incorrect Choice – By changing the causes from passive voice to active voice, this choice adds information that is not present in the original choice. It is not stated that America lowered the international trade barriers. Thus, this choice is incorrect.

Choice C – Correct choice. The verb tense error has been corrected.

Choice D – This choice distorts the intended meaning. It links the two rather independent tasks in causal relationship. Per this choice, the international trade barriers were lowered and this led to achieving gains in efficiency through use of automatic equipment. This is neither logical nor the intended meaning.

Choice E – Grammatically Correct but Incorrect Choice – This choice repeats the error in Choice B. It further changes the intended meaning by using “unprecedented” to describe “automated robotic equipment” instead of “efficiency gains”.

TAKE AWAYS


1. Always understand the intended meaning of the original sentence.
2. It is very important to note ALL the information present in the sentence.
3. The correct choice should communicate ALL that information – no more and no less – in a grammatically correct manner.

Hello ma'am,
If we do not specify who or how the international trade barriers were lowered, will it not be a case of dangling modifier?
avatar
Shiv2016
Joined: 02 Sep 2016
Last visit: 14 Aug 2024
Posts: 516
Own Kudos:
Given Kudos: 277
Posts: 516
Kudos: 211
Kudos
Add Kudos
Bookmarks
Bookmark this Post
egmat
jitbec - Congratulations. You win the OG Verbal review Solutions access for 1 month. Accurate and to the point analysis! Send me a PM with your e-GMAT user id information so that we can upgrade your account.

Quote:

egmat wrote:
The rise in American exports was possible because international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants.
    A. international trade barriers were lowered and unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants
    B. America lowered international trade barriers and the use of automated robotic equipment in American manufacturing plants resulted in unprecedented gains in efficiency
    C. international trade barriers were lowered and unprecedented gains in efficiency were obtained through the use of automated robotic equipment in American manufacturing plants
    D. international trade barriers were lowered, obtaining unprecedented gains in efficiency through the automated use of robotic equipment in manufacturing plants of America
    E. America lowered trade barriers internationally and the use of unprecedented automated robotic equipment in American manufacturing plants resulted in efficiency gains

Here is the official explanation for this question:

Understand the Meaning of the Original Sentence



This sentence presents a cause and effect. The effect is – rise in American exports. There are two causes:
• international trade barriers were lowered
• unprecedented gains in efficiency were obtained. This was done through the use of automated robotic equipment in US plants.

Find the Errors in the Original Sentence


1. The risein American exportswas possible
2. because
international trade barriers were lowered and
unprecedented gains in efficiency had been obtained through the use of automated robotic equipment in American manufacturing plants

All SV pairs are accounted for and agree in number. This sentence has verb tense error. Logically there is no reason to indicate one of the causes in simple past tense and the other cause in past perfect tense. There is no basis for such sequencing. Thus the verb – had been obtained – should be expressed as ‘were obtained’.

Review Answer Choices to do POE


Choice B – Grammatically Correct but Incorrect Choice – By changing the causes from passive voice to active voice, this choice adds information that is not present in the original choice. It is not stated that America lowered the international trade barriers. Thus, this choice is incorrect.

Choice C – Correct choice. The verb tense error has been corrected.

Choice D – This choice distorts the intended meaning. It links the two rather independent tasks in causal relationship. Per this choice, the international trade barriers were lowered and this led to achieving gains in efficiency through use of automatic equipment. This is neither logical nor the intended meaning.

Choice E – Grammatically Correct but Incorrect Choice – This choice repeats the error in Choice B. It further changes the intended meaning by using “unprecedented” to describe “automated robotic equipment” instead of “efficiency gains”.

TAKE AWAYS


1. Always understand the intended meaning of the original sentence.
2. It is very important to note ALL the information present in the sentence.
3. The correct choice should communicate ALL that information – no more and no less – in a grammatically correct manner.


Hello e-gmat and verbal experts

Can we use past perfect for the causes ?

international trade barriers had been lowered and unprecedented gains in efficiency had been obtained
User avatar
protimakudnu@yahoo.com
Joined: 29 May 2017
Last visit: 17 Nov 2017
Posts: 11
Own Kudos:
Given Kudos: 22
Posts: 11
Kudos: 3
Kudos
Add Kudos
Bookmarks
Bookmark this Post
correct answer is C because international trade barriers were lowered and unprecedented gains in efficiency were obtained written correctly.
User avatar
VerbalBot
User avatar
Non-Human User
Joined: 01 Oct 2013
Last visit: 04 Jan 2021
Posts: 18,829
Own Kudos:
Posts: 18,829
Kudos: 986
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Moderators:
GMAT Club Verbal Expert
7443 posts
GMAT Club Verbal Expert
231 posts
189 posts