Answer:
the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic.
Explanation:
Protons. Neutrons have no charge, so yeah. Protons are the answer.
I think the correct answer from the choices listed above is the third option. Chameleons can camouflage themselves to blend in with their surroundings is an example of a reproductive strategy. Hope this answers the question. Have a nice day.