An aquatic animal requires great amounts of water to survive.
Dolphins are an aquatic mammal closely related to whales and porpoises.
Dolphins require great amounts of water to survive.
What requires great amounts of water to survive?
Options:
(a) a tortoise
(b) leeches
(c) a dolphin
(d) a lizard
(e) a snake
(f) trout
(g) mussels
(h) amphibians