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Even in this age of conservation, cooking ranges that consume fossil

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Re: Even in this age of conservation, cooking ranges that consume fossil  [#permalink]

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New post 28 Nov 2017, 13:16
1
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egmat wrote:
Ravindra.here wrote:
well i don't agree with your explanation. Clearly , it seems like producing is a present participle
that is referring to cooking ranges that use fossil fuel .However, here producing is modifying ""those""
and the best construction , which is ANSWER B, compares the heat produced by Magnetic resonance cooking ranges
to the heat produced by one of the fossil fuels , natural gas.
As you said we are comparing heat produced by fossil fuels to heat produced by natural gas is wrong according to me.
And that is why option b adds a verb after natural gas in b



Hello Ravindra.here,

I agree to your analysis. Good observation points there. :-)

The approach to solve this question is simple - focus on the intended comparison.

The sentences compares two kinds of cooking ranges. They have been compared because one produces heat more efficiently than the other.

However, Choices A, C, and E presents ambiguous comparison because in the absence of the helping verb does, we can infer two comparisons in these choices:

Comparison 1: Cooking ranges that rely on magnetic resonance produce heat more efficiently than natural gas produces. Entities compared: Cooking ranges that rely on magnetic resonance and natural gas.


Comparison 2: Cooking ranges that rely on magnetic resonance produce heat more efficiently than natural gas. Entities compared: heat and natural gas.

Per the context of the sentence, Comparison 2 does nit make any sense because fossil fuels are natural gas only.

Hence, we must repeat the helping verb does to make the comparison clear.

This analysis leaved us with Choice B and D.

Use of which is incorrect in Choice D as which refers to magnetic resonance. Per the context of the sentence, magnetic resonance is not the part of comparsion. Hence, Choice D is correct.

Choice B is the clear winner.


Hope this helps. :-)
Thanks.
Shraddha


Hi,

As per the usage of ',' + verb-ing modifier, it shall modify preceding clause(precisely the verb in the clause)
Also as e-gmat mentions in the course, the doer of the verb and the modifier should always be same.

Could you please advise what is being modified and who is the doer in this case
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Re: Even in this age of conservation, cooking ranges that consume fossil  [#permalink]

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New post 26 Dec 2018, 11:39
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).

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Re: Even in this age of conservation, cooking ranges that consume fossil &nbs [#permalink] 26 Dec 2018, 11:39

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