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using "while with a comma"..experts please guide.

Expert replies
by rjain84 » Mon Jun 10, 2013 11:54 am
Even within the same study, people responded quite differently to acupuncture, some showing increased flexibility, while others did not.

A) some showing increased flexibility, while others did not.

B) with some showing increased flexibility, while others did not.

C) with some showing an increase in flexibility and others did not.

D) some showing an increase in flexibility, while others not.

E) with some showing increased flexibility and others not.

Source: Veritas prep question bank
OA: E

I get that the options A, B, and C are incorrect because they lack parallelism. Now, between D and E don't get why one is better than the other.

The official explanation to eliminate D is that you would need a complete clause after while with a comma and all you have is "while others not showing".

Are there any specific set of rules for using "while with a comma"? Experts please guide.
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Source: — Sentence Correction |

by rjain84 » Thu Jun 13, 2013 6:16 am
Experts please explain.
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