They are unicellular and not a multi-cellular, so your answer would be Option D)<span>They are multicellular.
Hope this helps!</span>
Obviously not. Pests in our subdivisions don't have any negative affect on nature. HUMANS are the main reason for the destruction of our nature. We pollute oceans and destroy forests and homes for creatures. The "pests" that you refer to actually vanishing themselves due to our destruction causing their predators to disappear.
