6. Study the image below, which shows the extremity bones of various mammals. What might some scientists infer from this diagram? A mammal is a type of animal that has fur or hair on its body, gives birth to live young, and usually feeds its babies with milk produced by special glands in its body.

A. The extremities of these mammals are different shapes/sizes and are used very differently. For this reason, they probably do *not* share a common ancestor.

B. The extremities of these mammals are structurally identical. For this reason, they probably share a common ancestor.

C. These mammals have similar bone structures in the extremities shown. For this reason, they probably share a common ancestor.

D. The bones in the extremities of these mammals are different sizes and lengths. For this reason, they probably do *not* share a common ancestor.

C. These mammals have similar bone structures in the extremities shown. For this reason, they probably share a common ancestor.