The answer to the blank i think is bond im not 100% sure though..
I think its A
A dog will bark at animals and cars, but only if the environment permits.
-Seth
A flagellum is a whip-like structure that allows a cell to move. They are found in all three domains of the living world:bacteria, archaea, and eukaryota, also known as protists, plants, animals, andfungi. While all three types of flagella are used for locomotion, they are structurally very different.
hope it helps