Comparison and parallellism

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nandy1984: Master | Next Rank: 500 Posts; Posts: 105; Joined: Fri Nov 05, 2010 8:29 pm; Thanked: 4 times

by nandy1984 » Fri Mar 30, 2012 5:23 pm

Plants are more efficient at acquiring carbon than are fungi, in the form of carbon dioxide, and converting it to energy-rich sugars.
A. Plants are more efficient at acquiring carbon than are fungi
B. Plants are more efficient at acquiring carbon than fungi
C. Plants are more efficient than fungi at acquiring carbon
D. Plants, more efficient than fungi at acquiring carbon
E. Plants acquire carbon more efficiently than fungi

Here i am confused between options C and D...Can anyone help?

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Source: Beat The GMAT — Sentence Correction | Fri Mar 30, 2012 5:23 pm

Bill@VeritasPrep: GMAT Instructor; Posts: 1248; Joined: Thu Mar 29, 2012 2:57 pmFollowed by: 192 members; Location: Everywhere; Thanked: 503 times; GMAT Score:780

by Bill@VeritasPrep » Fri Mar 30, 2012 6:26 pm

D creates a sentence fragment. It uses "more efficient than fungi at acquiring carbon" as a modifying phrase describing the subject (plants). The rest of the sentence, which is not underlined, continues with another modifying phrase ("in the form of carbon dioxide"). If we slash and burn them, we're left with a sentence of "Plants, and converting it to energy-rich sugars." We don't have a verb to go with our subject.

Bill

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GmatKiss: Legendary Member; Posts: 2789; Joined: Tue Jul 26, 2011 12:19 amFollowed by: 43 members; Location: Chennai, India; Thanked: 206 times; GMAT Score:640

by GmatKiss » Sun Apr 01, 2012 3:37 am

nandy1984 wrote:Plants are more efficient at acquiring carbon than are fungi, in the form of carbon dioxide, and converting it to energy-rich sugars.

Hide the red part of the question and you can find the flaw in D.

A. Plants are more efficient at acquiring carbon than are fungi
B. Plants are more efficient at acquiring carbon than fungi
C. Plants are more efficient than fungi at acquiring carbon and converting it to energy-rich sugars
D. Plants, more efficient than fungi at acquiring carbon and converting it to energy-rich sugars
E. Plants acquire carbon more efficiently than fungi

IMO: C

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