Crocodile
Whale
Bird
Crocodiles, bats, whales, and birds have similar limb bones. What do these similarities suggest?
A.
Crocodiles, bats, whales, and birds evolved from a common ancestor.
B. Bats and crocodiles share an ancestor with whales but not with birds.
C.
A similar limb structure evolved in each species independently and by chance,
D. The common ancestor of birds and crocodiles was a whale.
