Sentence Correction

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.

a. or to warn predators, as in the case of insects colored in yellow and black, which often signals that it is poisonous.
b. or for warning predators, as in the case of insects that have yellow and black coloring, which often signals that it is poisonous.
c. 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.
d. 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.
e. or to warn predators, as in the case of yellow-and-black insects, which often signals that they are poisonous.

Source: MGMAT
OA: C