Without seeing the images of the organisms you're referring to, it's difficult to provide a specific answer. However, I can help clarify what the structures in various organisms typically do based on common features:
- If the arrows are pointing at structures like fins, wings, or legs, they likely help the organisms A. move.
- If they are pointing at structures like kidneys or other organs involved in excretion, they might help in B. remove wastes.
- If the structures are related to eyes or sensory organs, then they assist in C. see.
- If the structures appear to be related to mouthparts, like mandibles or other chewing anatomy, they are likely used to D. chew.
If you can provide a description of the structures or a bit more context about the organisms, I can give you a more accurate answer!