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# Scientists have recently discovered that the ultrathin,

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Scientists have recently discovered that the ultrathin, [#permalink]

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21 Nov 2010, 03:11
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73% (00:56) correct 27% (00:50) wrong based on 543 sessions

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Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.

A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling
B. wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables
C. wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling
D. wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables
E. wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable
[Reveal] Spoiler: OA

Last edited by Vyshak on 22 Jun 2017, 22:22, edited 1 time in total.
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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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22 Nov 2010, 17:26
2
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raghavs wrote:
Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s
wings, the same as the one making some butterflies shimmer via the phenomenon of
iridescence, are enabling
the insect to control how much heat energy is absorbed by its
wings and how much is reflected away.

A. wings, the same as the one making some butterflies shimmer via the phenomenon
of iridescence, are enabling
B. wings, which is the same one that makes some butterflies shimmer via the
phenomenon of iridescence, that also enables
C. wings is the same as the one that makes some butterflies shimmer via the
phenomenon of iridescence, enabling
D. wings—the same construction that makes some butterflies shimmer via the
phenomenon of iridescence—also enables
E. wings—of the same construction that makes some butterflies shimmer via the
phenomenon of iridescence—also enable

Hi!

I'm not sure if you have a specific question or are just wondering about the sentence in general, but we'll look at the whole thing.

A commonly tested grammar topic on the GMAT is modification. Here's the general rule:

Quote:
When a sentence includes a modifying word or phrase, that word or phrase must be placed as closely as possible to whatever it's modifying.

This particular sentence is all about modification - and we recognize that by the parenthetical comment in the middle:

Quote:
, the same as the one making some butterflies shimmer via the phenomenon of iridescence,

(I included the commas because those are our signals that we're almost certainly being tested on modification).

So, whatever that phrase is modifying should be directly before or after the phrase.

In the original sentence, the subject of the modifying phrase isn't as clear as the GMAT demands; it could be the wings or the layered construction of the wings. When there's any kind of modification ambiguity, it's extremely unlikely that the choice will be correct.

Looking at the remaining choices:

B) has the same issue as (A) (adding "which is" doesn't make it any clearer) - eliminate.

C) has the same issue as (A) - eliminate.

D) begins with 'the same construction as' - this fixes the ambiguity issue as we now know that we're talking about the layered construction - looks good!

E) "of the same construction" doesn't make sense when read into the sentence - "of" messes up the meaning and flow - eliminate.

Choose (D)!

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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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23 Nov 2010, 15:32
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I picked "D" as the best choice out of all; however, I think that "also" is not needed before "enables" (because only one function of wing structure is mentioned).

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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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20 Dec 2010, 19:59
Fijisurf wrote:
I picked "D" as the best choice out of all; however, I think that "also" is not needed before "enables" (because only one function of wing structure is mentioned).

same here
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01 May 2015, 05:13
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Expert's post
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Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.

A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling

B. wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables

C. wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling

D. wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables

E. wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable
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01 May 2015, 11:00
souvik101990 wrote:
Scientists have recently discovered that
the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence,
are enabling
the insect to control how much heat energy is absorbed
by its wings and how much is reflected away.

subject is "the ultrathin, layered construction". the subject is in singular form, thus the verb must be in singular form

A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling
are enabling - SV number error

B. wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables
this is a fragment, no main verb
which refers to wings, although it might, I guess refer to the noun phrase construction of a butterfly's wings, but i highly doubt it is the case.

C. wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling
ing modifier presents new information, the construction enables...
I believe this is the correct answer.

D. wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables
tempting one, info between hyphens is additional information, but "also" is not desired here..too bad

E. wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable
enable - plural form of the verb, but the noun is in singular.

would like to see the OA & OE

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01 May 2015, 11:56
IMO D

C I think has a problem with the sentence construction

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01 May 2015, 12:38
Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings ...... should be enables . So left with B and D... B has a "which" that doesn't make sense. I will go with D.

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01 May 2015, 15:24
Answe is D, In C "enabling" in is incorrect and the sentence as a whole sounds awkward

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01 May 2015, 21:30
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The original sentence wants to make a point about the construction of the butterfly's wings.

If we read the sentence from "layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.".

We can eliminate the unbolded portion to see that the subject - "layered construction" and the verb "are" do not agree in number.

Choice B

B. wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables

which refers to wings not the layered construction. Moreover, there is a meaning and agreement issue with this sentence. wings....is- agreement error
Meaning issue- It says that the wings is the same one- wings are compared to some other wing or what? not clear.
Moreover the sentence construction is bad... If we read it after removing the appositive, it reads as follows

Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings that also enables the insect to control how much heat energy is absorbed by its wings and how much is reflected away. Upon closer examination the structure of the sentence is
Scientists have discovered the layered construction of X that also enables X to control Z . This thought is incomplete. Therefore, this choice is incorrect.

Choice C
C. wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling

This choice has a meaning error. The ques to be answered is Does the construction of the wings enable the butterfly to control how much heat energy is absorbed by its wings and how much is reflected away or the phenomenon of iridescence enables the butterfly to control how much heat energy is absorbed by its wings and how much is reflected away.

This choice suggests that the phenomenon is the reason for control. So the choice is incorrect.

Choice D
wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables.

This seems to be a fair choice so far. Construction of butterfly's wings is compared to another kind of construction that makes some butterflies shimmer via some phenomenon. Moreover, construction also enables the insect to blah blah ..... the subject ultra-thin(modifier) construction (noun) agrees with the verb, enables. Also is an adverb (modifier)

Choice E has a subject verb agreement error. construction...enable. Therefore, it is incorrect.

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03 May 2015, 04:26
Scientists have recently discovered [C1] that
--[C2]the ultrathin, layered construction of a butterfly’s wings,
---[modifier]the same as the one making some butterflies shimmer via the phenomenon of iridescence,
--[C2]are enabling
the insect to control how much heat energy is absorbed by its wings and how much is reflected away.

Note:Subject marked in bold.

A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling
>>SV error
B. wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables
>> Comma + that incorrect. Also it sounds as if main verb still has to come
C. wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling
>> blah blah construction of a butterfly’s wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling
comma + ing modifies preceding clause and make sense with the subject.
Changes the meaning. Seems to imply that iridescence results in the control. Changes meaning.

D. wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables
>> Correct.
E. wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable
>> SV error
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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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18 May 2015, 06:51
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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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08 Jun 2016, 05:28
raghavs wrote:
Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s
wings, the same as the one making some butterflies shimmer via the phenomenon of
iridescence, are enabling
the insect to control how much heat energy is absorbed by its
wings and how much is reflected away.
A. wings, the same as the one making some butterflies shimmer via the phenomenon
of iridescence, are enabling.

B. wings, which is the same one that makes some butterflies shimmer via the
phenomenon of iridescence, that also enables
C. wings is the same as the one that makes some butterflies shimmer via the
phenomenon of iridescence, enabling
D. wings—the same construction that makes some butterflies shimmer via the
phenomenon of iridescence—also enables
E. wings—of the same construction that makes some butterflies shimmer via the
phenomenon of iridescence—also enable

A. wings, the same as the one making some butterflies shimmer via the phenomenon
of iridescence, are enabling. plural verb is not required for singular 'layered construction'

B. wings, which is the same one that makes some butterflies shimmer via the
phenomenon of iridescence, that also enables 'which' incorrectly refers to 'wings'
C. wings is the same as the one that makes some butterflies shimmer via the
phenomenon of iridescence, enabling replacing 'one' with 'construction' changes the meaning, stating two constructions to be different. However, intended meaning is that only one construction leads to control the energy and shimmer.
D. wings—the same construction that makes some butterflies shimmer via the
phenomenon of iridescence—also enables 'enables' is the right verb used for singular 'construction
E. wings—of the same construction that makes some butterflies shimmer via the
phenomenon of iridescence—also enable 'enable' is not right.
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29 Sep 2016, 22:16
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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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26 Dec 2016, 12:02
Fijisurf wrote:
I picked "D" as the best choice out of all; however, I think that "also" is not needed before "enables" (because only one function of wing structure is mentioned).

Agreed. I was unsure of my answer because of the inclusion of "also."

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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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26 Mar 2017, 20:14
I don't know why but i think this problem is itself has wrong construction -that the ultrathin, I find this sentence incomplete.

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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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26 Mar 2017, 23:34
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Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.

Quote:
nightmare
I don't know why but i think this problem is itself has wrong construction -that the ultrathin, I find this sentence incomplete.

I am afraid that the sentence is being parsed wrongly down here. Let's not get into thinking that the ultrathin is any kind of a proper noun or specific name. It is just an adjective meaning extremely thin. The real subject of the sentence is the "construction" that is modified by two back - to - back coordinate adjectives namely ultrathin and layered. In the light of the fact that such a construction is making the butterflys shimmer and is enabling the butterflys to control the heat mechanism, "also enables" is good enough.

Now on to the choices.

A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling ---are enabling is SV error.

B. wings, which is the same one that makes some butterflies shimmer via the
phenomenon of iridescence, that also enables -- 1. Which is wrongly modifying wings. 2. Wings, which is an awful SV error. 3. This sentence is a fragment.
C. wings is the same as the one that makes some butterflies shimmer via the
phenomenon of iridescence, enabling ---- a subtle meaning issue here. This choice wrongfully makes the heat-control mechanism as an effect of the shimmering by placing the heat-controlling as a modifier of shimmering.
D. wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables -- Correct choice.
E. wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable --- also enable is SV error.
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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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28 Mar 2017, 05:32
is "also" in option D considered correct?

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Re: Scientists have recently discovered that the ultrathin, [#permalink]

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27 Jun 2017, 06:08
Merged topics. Please, search before posting questions!
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Scientists have recently discovered that the ultrathin, [#permalink]

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18 Nov 2017, 20:46
daagh wrote:
Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.

Quote:
nightmare
I don't know why but i think this problem is itself has wrong construction -that the ultrathin, I find this sentence incomplete.

I am afraid that the sentence is being parsed wrongly down here. Let's not get into thinking that the ultrathin is any kind of a proper noun or specific name. It is just an adjective meaning extremely thin. The real subject of the sentence is the "construction" that is modified by two back - to - back coordinate adjectives namely ultrathin and layered. In the light of the fact that such a construction is making the butterflys shimmer and is enabling the butterflys to control the heat mechanism, "also enables" is good enough.

Now on to the choices.

A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling ---are enabling is SV error.

B. wings, which is the same one that makes some butterflies shimmer via the
phenomenon of iridescence, that also enables -- 1. Which is wrongly modifying wings. 2. Wings, which is an awful SV error. 3. This sentence is a fragment.
C. wings is the same as the one that makes some butterflies shimmer via the
phenomenon of iridescence, enabling ---- a subtle meaning issue here. This choice wrongfully makes the heat-control mechanism as an effect of the shimmering by placing the heat-controlling as a modifier of shimmering.
D. wings—the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enables -- Correct choice.
E. wings—of the same construction that makes some butterflies shimmer via the phenomenon of iridescence—also enable --- also enable is SV error.

mikemcgarry ,sayantanc2k , RonPurewal , daagh ,GMATNinja ,egmat , other experts -- please englighten

1. In option A , if we change are enabling to enable , then option A will be correct ?

Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.

2. Is the modifier "the same as the one making .. iridescence" an absolute phrase?

3. Though I was able to select the correct answer , i took longer than usual because of the presence of a comma in "ultrathin, layered construction of a butterfly’s wings" since initially, I assumed layered construction to be a modifier .
Is the presence of this comma okay here?
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Scientists have recently discovered that the ultrathin,   [#permalink] 18 Nov 2017, 20:46

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