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At ground level, ozone is a harmful pollutant, but in the

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At ground level, ozone is a harmful pollutant, but in the  [#permalink]

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New post Updated on: 05 Mar 2018, 07:46
3
00:00
A
B
C
D
E

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  15% (low)

Question Stats:

81% (00:23) correct 19% (00:17) wrong based on 130 sessions

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4. At ground level, ozone is a harmful pollutant, but in the stratosphere it shields the Earth from the most biologically harmful radiation emitted by the Sun, radiation in the ultraviolet band of the spectrum.

(A) in the stratosphere
(B) in the stratosphere, in which
(C) it is in the stratosphere in which
(D) in the stratosphere where
(E) it is in the stratosphere and

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Originally posted by perfectstranger on 16 Jun 2009, 16:56.
Last edited by broall on 05 Mar 2018, 07:46, edited 1 time in total.
Reformatted question, added OA
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New post 16 Jun 2009, 17:06
Confused between A and D , will go with A for conciseness
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New post 16 Jun 2009, 18:00
IMO A....
somehow I feel placing where in choice D makes the sentence ask for more placeholders...the sentence does not completes
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New post 16 Jun 2009, 18:34
Even I feel the same. I thought of D but where makes the sentence incomplete...
I go for A.
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New post 17 Jun 2009, 01:29
A it is.

D makes the sentence incomplete.
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New post 17 Jun 2009, 03:50
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New post 17 Jun 2009, 07:52
Could you provide explanation for the choices ? I know the answer so instead of saying A,B,C,D and E please provide the logic and rules behind it. I wrote the question here to learn what was my mistake and why this mistake arised.
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New post 17 Jun 2009, 09:51
I also think the answer is A. This is a construction that follows the "A but B" format, which typically requires that A and B be parallel in structure. Looking at the choices:

(A) in the stratosphere - correctly contrasts with 'at the ground level'
(B) in the stratosphere, in which - in which is redundant, already contains 'in'
(C) it is in the stratosphere in which - distorts meaning, awkward
(D) in the stratosphere where - breaks parallelism, 'where' redundant
(E) it is in the stratosphere and - distorts meaning, breaks parallelism
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New post 18 Jun 2009, 05:45
Another A...Using D would seem to make an incomplete sentence...
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Re: At ground level, ozone is a harmful pollutant, but in the  [#permalink]

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New post 19 Jun 2009, 09:57
1
perfectstranger wrote:
4. At ground level, ozone is a harmful pollutant, but in the stratosphere it shields the Earth from the most biologically harmful radiation emitted by the Sun, radiation in the ultraviolet band of the spectrum.
(A) in the stratosphere
(B) in the stratosphere, in which
(C) it is in the stratosphere in which
(D) in the stratosphere where
(E) it is in the stratosphere and


B, C and E require the additional verb.e.g.
In my class, Kate is intelligent, but in another class in which/where there are other bright students, she is not noticeable. The example above must have the similar structure to be right. E is wordy. So A remains correct.
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Re: At ground level, ozone is a harmful pollutant, but in the  [#permalink]

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New post 22 Sep 2017, 01:06
perfectstranger wrote:
4. At ground level, ozone is a harmful pollutant, but in the stratosphere it shields the Earth from the most biologically harmful radiation emitted by the Sun, radiation in the ultraviolet band of the spectrum.
(A) in the stratosphere
(B) in the stratosphere, in which
(C) it is in the stratosphere in which
(D) in the stratosphere where
(E) it is in the stratosphere and


Because of the very vastness of grammar, I have always found the elimination method to get correct answer in SC.

I will try to reason it via "Process of Elimination" :

(A) in the stratosphere Parallel to "at the ground level" I donot find any error. So lets leave it now
(B) in the stratosphere, in which - which is unnecessary. Eliminated
(C) it is in the stratosphere in which Same as B
(D) in the stratosphere where - Where is unnecessary. Eliminated
(E) it is in the stratosphere and - No need of conjunction. Eliminated.

Now we can see, we are left with only option A. And others have clear errors.
HENCE A.
Re: At ground level, ozone is a harmful pollutant, but in the &nbs [#permalink] 22 Sep 2017, 01:06
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