The bee fly resembles a honeybee, but the bee fly has no stinger. this is an example of

Mimicry. Mimicry the close resemblance of 1 plant or animal to another for some purpose. mimicry is a similarity of one organism, usually an animal, to another that has evolved because the resemblance is selectively favoured by the behaviour of a shared signal receiver that can respond to both.[1] Mimicry may evolve between different species, or between individuals of the same species. Often, mimicry evolves to protect a species from predators, making it an antipredator adaptation.[2] The resemblances that evolve in mimicry can be in appearance, behaviour, sound or scent.

answer; ///i believe that the correct answer is (a) specialized cells)