Agriculture

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Agriculture

by AnjaliOberoi » Tue Jan 07, 2014 3:06 am
During the eighteenth century, widespread changes in agriculture, known as the
agrarian revolution, involving the large-scale introduction of enclosed fields, of new
farming techniques and crops, and
the substitution of commercial for subsistence
farming.
A. revolution, involving the large-scale introduction of enclosed fields, of new farming
techniques and crops, and
B. revolution, involved the large-scale introduction of enclosed fields and of new
farming techniques and crops, and
C. revolution, which involved the large-scale introduction of enclosed fields and of new
farming techniques and crops, and
D. revolution involved the large-scale introduction of enclosed fields, new farming
techniques and crops, and of
E. revolution that involved the large-scale introduction of enclosed fields and new
farming techniques and crops, and of

OA B, Why not [spoiler]C[/spoiler]....in B
Source: — Sentence Correction |

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by theCodeToGMAT » Tue Jan 07, 2014 3:25 am
AnjaliOberoi wrote:During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution, involving the large-scale introduction of enclosed fields, of new farming techniques and crops, and the substitution of commercial for subsistence farming.

B. revolution, involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and

C. revolution, which involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and
INCORRECT; Verb is missing.
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by manihar.sidharth » Wed Jan 08, 2014 7:42 am
AnjaliOberoi wrote:During the eighteenth century, widespread changes in agriculture, known as the
agrarian revolution, involving the large-scale introduction of enclosed fields, of new
farming techniques and crops, and
the substitution of commercial for subsistence
farming.
A. revolution, involving the large-scale introduction of enclosed fields, of new farming
techniques and crops, and
B. revolution, involved the large-scale introduction of enclosed fields and of new
farming techniques and crops, and
C. revolution, which involved the large-scale introduction of enclosed fields and of new
farming techniques and crops, and
D. revolution involved the large-scale introduction of enclosed fields, new farming
techniques and crops, and of
E. revolution that involved the large-scale introduction of enclosed fields and new
farming techniques and crops, and of

OA B, Why not [spoiler]C[/spoiler]....in B
I also got stuck b\w B and C and I chose C over B because B introduces a non essential modifier and if we take out the non essential modifier then crux of the sentence should not get distorted,whereas in this case we need a modifier that explains the revolution.So ,verb-ed modifier directly modifies the noun before the comma and describes the agrarian revolution.
Please point out if there is a flaw in my reasoning.

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by theCodeToGMAT » Wed Jan 08, 2014 9:05 am
In {C}, Verb is missing
.....widespread changes in agriculture, known as the agrarian revolution, which involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and the substitution of commercial for subsistence
farming.
RED = Appositive
BLUE = Non-essential Part

If we remove both, we get

widespread changes in agriculture and the substitution of commercial for subsistence farming.
No Verb.
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