Which anatomical adaptation an elephant regulate its body temperature?

a. large ears increase surface area so that more heat is lost by radiation.

b. a large stomach stores a lot of water to make up for moisture loss due to sweating.

c. a large trunk smells water from far away and guides the elephant to it.

I think the correct answer from the choices listed above is option A. The anatomical adaptation which helps an elephant regulate its body temperature are its large ears increase surface area so that more heat is lost by radiation. Heat can be released as they flap these ears.

It is considered a Scientific Law, like the law of conservation of energy, or the law of gravity.