Ultrathin layer

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 239
Joined: Thu Oct 28, 2010 8:40 am
Location: India
Thanked: 5 times
Followed by:2 members
GMAT Score:690

Ultrathin layer

by Dean Jones » Sat Nov 26, 2011 10:50 pm
Dear Friends,

I was having problems in answering the following question.

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


Please help.

OA after some discussions.

Regards
Deano.

Legendary Member
Posts: 784
Joined: Sun Apr 03, 2011 3:51 am
Thanked: 114 times
Followed by:12 members

by patanjali.purpose » Sun Nov 27, 2011 3:19 am
Dean Jones wrote:Dear Friends,

I was having problems in answering the following question.

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


Please help.

OA after some discussions.

Regards
Deano.
Subject of the clause 'the ultrathin, layered construction of a butterfly's wings' - is CONSTRUCTION.
Drop A/E. Drop B as there is no main verb

C vs D
D - use of ALSO (not required; nor mentioned in original sentence). Moreover, the use of THE SAME CONSTRUCTION is not as precise as C in which ONE is used to refer to CONSTRUCTION.

Moreover, ENABLING in C modifies clearly the clause 'The ultrathin...iridescence' and that means the ultrathin construction is enaling the insect to control X and Y (ie how much heat energy is absorbed by its wings and how much is reflected away)

IMO C

User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pm
Location: New York, NY
Thanked: 13060 times
Followed by:1906 members
GMAT Score:790

by GMATGuruNY » Sun Nov 27, 2011 3:41 am
Dean Jones wrote:Dear Friends,

I was having problems in answering the following question.

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


Please help.

OA after some discussions.

Regards
Deano.
In A and E, construction (singular) does not agree with the plural verbs are enabling (in A) and enable (in E). Eliminate A and E.

In B, construction (subject) lacks a verb. The result is a sentence fragment. Eliminate B.

In C, enabling (COMMA + VERBing) should modify the NEAREST preceding clause. But it makes no sense to say the one that makes SOME BUTTERFLIES shimmer...enabling THE INSECT to control: the implication is that THE INSECT refers to SOME BUTTERFLIES. Eliminate C.

The correct answer is D.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3

Legendary Member
Posts: 1574
Joined: Fri Jan 28, 2011 2:52 am
Thanked: 88 times
Followed by:13 members

by aspirant2011 » Sun Nov 27, 2011 10:04 am
Dean Jones wrote:Dear Friends,

I was having problems in answering the following question.

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


Please help.

OA after some discussions.

Regards
Deano.

User avatar
Master | Next Rank: 500 Posts
Posts: 461
Joined: Tue May 10, 2011 9:09 am
Location: pune
Thanked: 36 times
Followed by:3 members

by amit2k9 » Sun Nov 27, 2011 8:21 pm
split is are enabling, enable and enables.
A,E POE.
usage of which is not correct in B. POE.
the same as one - does not have a clear referent wings or construction ? POE.

D is correct usage.
For Understanding Sustainability,Green Businesses and Social Entrepreneurship visit -https://aamthoughts.blocked/
(Featured Best Green Site Worldwide-https://bloggers.com/green/popular/page2)

Master | Next Rank: 500 Posts
Posts: 239
Joined: Thu Oct 28, 2010 8:40 am
Location: India
Thanked: 5 times
Followed by:2 members
GMAT Score:690

by Dean Jones » Wed Nov 30, 2011 5:35 am
OA is option D

Master | Next Rank: 500 Posts
Posts: 242
Joined: Fri Aug 01, 2008 8:49 am
Location: Delhi
Thanked: 6 times

by ranjeet75 » Wed Nov 30, 2011 7:16 am
Yes D is correct