Answer: The correct answer is option D
CHARACTER DISPLACEMENT
Explanation: Character displacement is a type of evolutionary change or divergence,in character displacement, two similar species inhabit the same environment. under such conditions, natural selection favors a divergence in the characters,morphology(forms), ecology (relations of organisms to one another and to their physical surroundings), behaviors, or physiology (functions) of the organisms.
Character displacement is caused by when similar species that live in the same geographical region, occupying similar niches differentiate themselves so as to minimize/reduce niche overlap and avoid competitive exclusion/ behaviours among themselves.
From the explanation given,character displacement is clearly seen in the avenger beetles from the question.