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Like the changing color of certain tropical fish, chameleons`s colors depend on the surrounding environment.
(A) chameleon`s colors depend on => plural, not parallel with singular
(B) a chameleon color depends on
(C) that of chameleons depend on => should have been "depends"
(D) a chameleon`s color depends on => parallel & correct (E) that of a chameleon's is dependent on