The 3rd one I think not really sure
B. Crab
is your answer
An crab has an exoskeleton
hope this helps
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
I need answer choices to be able to give you an answer
I would say communication, as neurons transmits messages from one part to another part of the body
