The statement that contains a true analogy is C. Coral polyps have tiny tentacles that act like arms to capture their food from the water and protect themselves.
Explanation:
An <u>analogy</u> is a comparison of things aimed at showing their similarities; it explains something -<em>tentacles</em>, in this case- in terms of another thing-<em>arms</em>- and shows how they are alike. <u>True analogies</u> like this one must not be confused with similies or metaphors that, although they are similar, are not the same.