Lacking information about energy use, people : GMAT Sentence Correction (SC)
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Lacking information about energy use, people

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Lacking information about energy use, people [#permalink]

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New post 26 Feb 2014, 13:26
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A
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Difficulty:

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Question Stats:

63% (02:08) correct 37% (01:33) wrong based on 248 sessions

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Lacking information about energy use, people tend to overestimate the amount of energy used by
equipment. such as lights, that are visible and must be turned on and off and underestimate that used by
unobtrusive equipment, such as water heaters.
(A) equipment, such as lights, that are visible and must be turned on and off and underestimate that
(B) equipment, such as lights, that are visible and must be turned on and off and underestimate it when
(C) equipment, such as lights, that is visible and must be turned on and off and underestimate it when
(D) visible equipment, such as lights, that must be turned on and off and underestimate that
(E) visible equipment, such as lights, that must be turned on and off and underestimate it when
[Reveal] Spoiler: OA
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Re: Lacking information about energy use, people [#permalink]

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New post 27 Feb 2014, 09:04
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goodyear2013 wrote:
Lacking information about energy use, people tend to overestimate the amount of energy used by
equipment. such as lights, that are visible and must be turned on and off and underestimate that used by
unobtrusive equipment, such as water heaters.
(A) equipment, such as lights, that are visible and must be turned on and off and underestimate that
(B) equipment, such as lights, that are visible and must be turned on and off and underestimate it when
(C) equipment, such as lights, that is visible and must be turned on and off and underestimate it when
(D) visible equipment, such as lights, that must be turned on and off and underestimate that
(E) visible equipment, such as lights, that must be turned on and off and underestimate it when


Lots of good stuff in this question. You can see Subject Verb agreement issues in A & B (equipment are is). There is a nice split between "equipment that is visible" and "visible equipment" - "visible equipment" is more concise and is parallel with the comparison element, "unobtrusive equipment", so C can be eliminated.

That leaves us with D & E and this is where is gets interesting. This is a case where the correct answer "sounds wrong". It sounds good to say "underestimate it when" and sounds wrong to say "underestimate that". Grammatically, however, we can use "that" to refer back to "the amount of energy" but "it" doesn't refer clearly back to that phrase/concept. Additionally, using the word "when" is not parallel. We need to say "overestimate the amount of energy used...and underestimate that [the amount of energy] used". The correct answer is D.

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Re: Lacking information about energy use, people [#permalink]

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New post 30 Jun 2015, 04:34
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Re: Lacking information about energy use, people [#permalink]

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New post 17 Mar 2016, 09:48
goodyear2013 wrote:
Lacking information about energy use, people tend to overestimate the amount of energy used by
equipment. such as lights, that are visible and must be turned on and off and underestimate that used by
unobtrusive equipment, such as water heaters.
(A) equipment, such as lights, that are visible and must be turned on and off and underestimate that
(B) equipment, such as lights, that are visible and must be turned on and off and underestimate it when
(C) equipment, such as lights, that is visible and must be turned on and off and underestimate it when
(D) visible equipment, such as lights, that must be turned on and off and underestimate that
(E) visible equipment, such as lights, that must be turned on and off and underestimate it when



In D - lights, which is a plural subject, is handled accordingly.

(D) visible equipment, such as lights, that must be turned on and off and underestimate that
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Re: Lacking information about energy use, people [#permalink]

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New post 19 Mar 2016, 03:49
The vital clue is the ‘unobtrusive equipment’ in the un-underlined part. Its corresponding match should be ‘visible equipment’ and not equipment that is or are visible’. Therefore, A,B and C are out. Between D and E, E mars the parallelism by the intrusion of the word ‘when’ after ‘that’
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Re: Lacking information about energy use, people   [#permalink] 19 Mar 2016, 03:49
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