The passage proposes that there are quantitative "laws" of biology that have their basis in physical principles, using the scaling of specific metabolic rate with body mass as an example. Which of the following regularities among animals might also be an example of such a "law"?

A. As a group, birds have better color vision than mammals.

B. Reptiles have a much lower specific metabolic rate than mammals.

C. Predators tend to have very good binocular vision; prey animals tend to be able to see over a very wide angle.

D. Jump height varies very little among animals. Nearly all animals, ranging in size from a flea to a horse, have a maximum vertical leap that is quite similar.