Sentence Correction

gmatnmein2010 wrote:The coloration of insects can serve as camouflage, as in the case of green insects that spend their lives in or near foliage, or to warn predators, as in the case of insects colored in yellow and black, which often signals that it is poisonous.


or to warn predators, as in the case of insects colored in yellow and black, which often signals that it is poisonous.
doesn't have a clear antecedent. Not parallel

or for warning predators, as in the case of insects that have yellow and black coloring, which often signals that it is poisonous.
Same as A.


or as a warning to predators, as in the case of insects bearing a combination of yellow and black, which often signals that they are poisonous.


or as a predator's warning, as in the case of insects that are colored yellow and black, which often signals that they are poisonous.
Awkward construction.

or to warn predators, as in the case of yellow-and-black insects, which often signals that they are poisonous.
Not parallel.

sunil_snath wrote:I have a doubt on the parallelism objects chosen in the OE:

The below construction looks right to me (E):
The coloration of insects can serve as comouflage
The coloration of insects can serve to warn predators

However the explanation suggests the following (C):
The coloration of insects can serve as camouflage
The coloration of insects as a warning to predators

Any help?