Parallelism issue //experts pls comment....!!!

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Methane, which has long been counted among the green house gasses that are implicated in global warming, comes both from natural sources such as bogs and from a host of human sources, including coal mines, leaking pipelines, landfills, and rice paddies.

a. same
b. that are implicated in global warming, coming from both
c. being implicated in global warming, comes from both
d. implicated in global warming and coming both from
e. implicated in global warming, that come both from

OA-A

[spoiler]How is parallelism followed in A. It should be both X and Y.bUT here its both from X and Y.[/spoiler]Experts pls clarify the issue of parallelism here.
Source: — Critical Reasoning |

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by badpoem » Sun Aug 28, 2011 5:37 am
Wrong section to post.

I am no expert but here's my take.

Methane, which has... that are... --> suggests that we need to follow up with a present tense to match with the present perfect.

That leaves us with A and C.

C --> 'being' makes it a reject.

and A comes both from.... and from... is parallel. So A.

1) both X and Y is the idiom, yes.
2) [Both] from X and from Y is parallel too.

If the construction were comes from both X and Y, then 1) would have been applicable.

Here both is not part of the parallelism. The idiom simply is from X and from Y. Did that help?

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by killer1387 » Sun Aug 28, 2011 9:07 am
yepp, thnx..!!

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by navami » Mon Aug 29, 2011 7:32 am
A
This time no looking back!!!
Navami