Answers A) Whales Can Travel on Land When Necessary. B) Whales Are Developing Into Animals with four functioning Limbs C) Whales have Functional Legs That Are hidden By Fat And Skin D) Whales Evolved From four Legged Animals
Some species of whales have what is called "vestigial organs." These structures are a result of evolution from a common ancestor, yet have no purpose for the organism. So, probably D.
