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# The Earth is composed of many layers

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Manager
Joined: 14 Apr 2017
Posts: 248
Location: India
sandeep : sharma
GPA: 3.9
The Earth is composed of many layers [#permalink]

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02 Oct 2017, 07:44
2
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Difficulty:

35% (medium)

Question Stats:

69% (01:29) correct 31% (01:26) wrong based on 235 sessions

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The Earth is composed of many layers, and if the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before scientists can predict.
A- the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before
B- the iron in its core moves significantly it changes the Earth’s magnetic field, sometimes more significantly than
C- It moves the iron in its core it changes the Earth’s magnetic field, sometimes more significantly,
D- they move the iron in the core it changes the Earth’s magnetic field, because sometimes more significantly than
E- they move the iron in the core the Earth’s magnetic field is changed, sometimes more significantly

Hi folks .. this question is from ready4gmat app freely available . I marked A

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Director
Joined: 14 Nov 2014
Posts: 662
Location: India
Schools: Rotman '20 (S)
GMAT 1: 700 Q50 V34
GPA: 3.76
Re: The Earth is composed of many layers [#permalink]

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02 Oct 2017, 08:58
2
mbaaspirant80 wrote:
The Earth is composed of many layers, and if the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before scientists can predict.
A- the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before
B- the iron in its core moves significantly it changes the Earth’s magnetic field, sometimes more significantly than
C- It moves the iron in its core it changes the Earth’s magnetic field, sometimes more significantly,
D- they move the iron in the core it changes the Earth’s magnetic field, because sometimes more significantly than
E- they move the iron in the core the Earth’s magnetic field is changed, sometimes more significantly

Hi folks .. this question is from ready4gmat app freely available . I marked A

We can do 3:2 split by concentrating on idiom "more ..than "...
this will eliminate A,C,and E.
now D --They is wrong ..
left with B ...
Senior Manager
Joined: 12 Mar 2013
Posts: 296
Re: The Earth is composed of many layers [#permalink]

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12 Oct 2017, 02:28
What does "it" refer to in choice B? Can anyone please explain?

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Intern
Joined: 04 Feb 2017
Posts: 14
Location: India
Concentration: Marketing, Human Resources
WE: Sales (Manufacturing)
Re: The Earth is composed of many layers [#permalink]

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05 Nov 2017, 19:50
Dear Experts,

I am confused in the usage of the pronoun "it" in Option B, as the sentence says "it changes the Earth's..."
it may refer to the core or iron.
Actually, "it" should present the result of iron in the core moving significantly.

Pl correct.
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Joined: 14 Dec 2013
Posts: 3198
Location: Germany
Schools: HHL Leipzig
GMAT 1: 780 Q50 V47
WE: Corporate Finance (Pharmaceuticals and Biotech)
Re: The Earth is composed of many layers [#permalink]

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08 Nov 2017, 07:50
1
SAHILJPR wrote:
Dear Experts,

I am confused in the usage of the pronoun "it" in Option B, as the sentence says "it changes the Earth's..."
it may refer to the core or iron.
Actually, "it" should present the result of iron in the core moving significantly.

Pl correct.

Though your point is valid, option B is acceptable. By virtue of parelleism "it" refers to "iron" (If there are more than one possible antecedents for a pronoun subject, the pronoun subject refers to a noun subject (of another clause in the sentence) rather than a noun which is not a subject).

Also, it makes sense to say that the iron changes the magnetic field (because it moved).
Retired Moderator
Joined: 14 Dec 2013
Posts: 3198
Location: Germany
Schools: HHL Leipzig
GMAT 1: 780 Q50 V47
WE: Corporate Finance (Pharmaceuticals and Biotech)
Re: The Earth is composed of many layers [#permalink]

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08 Nov 2017, 07:58
SAHILJPR wrote:
Dear Experts,

I am confused in the usage of the pronoun "it" in Option B, as the sentence says "it changes the Earth's..."
it may refer to the core or iron.
Actually, "it" should present the result of iron in the core moving significantly.

Pl correct.

Referring to your comment ""it" should present the result of iron in the core moving significantly":

"It" cannot refer to the "result". The result IS the change in the magnetic field. It does not make sense to say that the result of the movement (i.e. the the change in magnetic filed) changes to the magnetic field.
Manager
Joined: 13 Jun 2012
Posts: 181
Location: United States
WE: Supply Chain Management (Computer Hardware)
Re: The Earth is composed of many layers [#permalink]

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08 Nov 2017, 09:18
mbaaspirant80 wrote:
The Earth is composed of many layers, and if the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before scientists can predict.
A- the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before
B- the iron in its core moves significantly it changes the Earth’s magnetic field, sometimes more significantly than
C- It moves the iron in its core it changes the Earth’s magnetic field, sometimes more significantly,
D- they move the iron in the core it changes the Earth’s magnetic field, because sometimes more significantly than
E- they move the iron in the core the Earth’s magnetic field is changed, sometimes more significantly

Hi folks .. this question is from ready4gmat app freely available . I marked A

In option A ( if the iron in its core is moved) sounds like someone is going to move the iron. This is not what author is trying to say. He is saying If the iron in its core moves ..
Re: The Earth is composed of many layers   [#permalink] 08 Nov 2017, 09:18
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