It's C , i'm 100% positive
<span>They have setae covering their bodies.
They have a one-way digestive system.</span>
Answer: the functions of the skeleton. Structure, protection (ribs), allow movement, chemical/physiological: stores calcium and the tissues are made up of the same material
Explanation:
The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.
