Bats, birds, and humans are vertebrates. Birds and bats have wings that help them fly, and humans don’t have wings. But if you looked at the bone structure of all three organisms, you’d notice similarities in the arrangement of their bones. What can you infer from this information? A)Birds, bats, and humans share a common ancestor. B)Birds and bats have evolved from humans. C)Birds, bats, and humans are mammals. D)Humans are more related to birds than to bats. E)Birds are more related to bats than to humans.

(1) Answers

A. They share a common ancestor because otherwise they would not have similar arrangements of bones. It doesn't matter that humans can't fly

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