Q: Fact 1: Fish have a circulatory system with a two-chambered heart. Fact 2: Fish, such as tuna, is a high protein food. Given the two facts above, what has a circulatory system with a two-chambered heart?

Possible answers:
(a). salmon
(b). Man
(c). Toyota
(d). Birds
(e). koalas
(f). tuna
(g). sharks
(h). toads
The answer is:
(f).