what's d source....??

Can any expert please throw some light...

Thanks

Even i too went for D . The source is OG .

The official explanation goes as follows :-

FOR OPTION D --- > Illogical and awkward construction that attempts to make "merges" the second verb of restrictive clause parallel to "powers" and "does not split";punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy

FOR OPTION C --- > "Rather than " is cprrect idiom for comparison in this sentence ; as is followed by clause with a subject , nuclear reactors and a verb , do;the comparison is clear and complete.

AIM GMAT wrote:Even i too went for D . The source is OG .

The official explanation goes as follows :-

FOR OPTION D --- > Illogical and awkward construction that attempts to make "merges" the second verb of restrictive clause parallel to "powers" and "does not split";punctuation makes clear this separate action cannot be the case; as is done is awkward and wordy

FOR OPTION C --- > "Rather than " is cprrect idiom for comparison in this sentence ; as is followed by clause with a subject , nuclear reactors and a verb , do;the comparison is clear and complete.

@AIM

I didn't went for Op D because i find "AS is...awkward and wrong"...and finally i find all the answer choices incorrect as in Op C i find comparison issue...but now as a surprise element, this question is from OG...so some expert may help us in the explaining the role and comparison of AS clause...if i remove the modifier in Op C, then sentence will be

Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, as nuclear reactors do.

Now if i go by @smackmartine post and try to apply some logic (b/w power and do), i can apply but its only because this question is from OG so it can't be incorrect...may be some expert can give us some convincing reasoning.

Hi Atul,

"Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms" ---------> this is a run on sentence and here merging is modifying the preceding clause completely..............we are comparing this whole with the nuclear reactors which basically do "splitting the nuclei of atoms"..........I hope I was able to clear your doubt........

Hey Atul (and everyone),

Thanks for the invitation to chime in! Here's a quick rundown of the use of "as" here:

-"As" doesn't have to be used in a comparison ("as much as...") but can also be used to link together like actions. For example: I love pizza, as does my brother.

In this case, you need a parallel verb like "does", because otherwise you'd have "I love pizza as my brother", in which case either I enjoy pizza while being my brother (which is illogical) or I like pizza that is my brother (also illogical). So we need to assign a verb to the second portion to that it's parallel and therefore logical.

-This use of "as" to tack on a similar action is pretty common. You've probably seen it in business articles:

"The United States is dealing with a debt crisis, as are many European Union nations."
"Libya has undergone a series of violent demonstration, as have Egypt, Tunisia, and several other Middle Eastern countries."

Note that these uses of "as" are adding new information that's not really essential but helps to round out the sentence in context.


-In this sentence, the add-on, additional "good to know but nonessential" information is that the counter action (splitting atoms apart) that does not take place in fusion is actually what happens in nuclear reactors. So "as nuclear reactors do" here is used to link that action nonessentially to be parallel with "not splitting atoms apart". This usage of "as...do" makes it clear that nuclear reactors split atoms, while as we know from previously in the sentence fusion does not.



That's at least the explanation for the use of "as" with "do" and why that's the best option. I hope that helps...

But C

merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do

makes it seem as if nuclear reactors too merge nuclei rather than split them, doesnt it ?