Q: Fact 1: Lungs are used for breathing air by land animals. Fact 2: Elephants are the largest animals on land. Given the two facts above, what uses lungs to breathe air?

Pick from: a). elephants; b). Frogs; c). humans; d). the sun; e). some mammals; f). monotremes; g). bacteria; h). rock candy;
A:
a).