Answer the following question: You are presented with the question "What requires great amounts of water to survive?" and the following answer choices: - a tortoise - leeches - a dolphin - a lizard - a snake - trout - mussels - amphibians Now knowing that an aquatic animal requires great amounts of water to survive and dolphins are an aquatic mammal closely related to whales and porpoises, choose the best answer.
Answer:
a dolphin