What is used to link small parts together so animals can move easily from one to another

Animal locomotion, in ethology, is any of a variety of methods that animals use to move from one place to another. The anatomical structures that animals use for movement, including cilia, legs, wings, arms, fins, or tails are sometimes referred to as locomotory organs or locomotory structures.

Ibelieve the answer is c. 

Iwolud you, but i dont know what you are asking.