You are given the task of confirming the categorization of a newly discovered marine animal that has been tagged as a species of echinoderm. what evidence would convince you that it is an echinoderm and not different marine animal such as a sponge or sea anemone?

c is the correct answer hope this !

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.