The answer is a black mamba.
The black mamba is predator typically found in central Africa. Not only that its scales are black but also an interior of its mouth. It moves very quickly and at any sudden movement, it is ready to slay its opponents through a rapid application of venomous strikes. <span>Its venom is highly toxic and it could kill a man for 10-15 hours after the bite if antivenom is not applied.</span>
It's A; maintaining fluid balance
Water is an excellent solvent because its polar water molecules form hydrogen bonds with ions and polar molecules, allowing ionic and polar covalent compounds to disperse easily in water.