Question ID:PT5 S3 Q6 Passage:As air-breathing mammals, whales must once have lived on land and needed hind limbs capable of supporting the mammals’ weight. Whales have the bare remnants of a pelvis. If animals have a pelvis, we expect them to have hind limbs. A newly discovered fossilized whale skeleton has very fragile hind limbs that could not have supported the animal’s weight on land. This skeleton had a partial pelvis. Stem:If the statements above are true, which one of the following, if also true, would most strongly support the conclusion that the fragile hind limbs are remnants of limbs that land-dwelling whales once had? Correct Answer Choice:AChoice A:Whale bones older than the fossilized hind limbs confirm that ancient whales had full pelvises. Choice B:No skeletons of ancient whales with intact hind limbs capable of supporting the mammals’ weight have ever been found. Choice C:Scientists are uncertain whether the apparently nonfunctioning limbs of other early mammals derived from once-functioning limbs of their ancestors. Choice D:Other large-bodied mammals like seals and sea lions maneuver on beaches and rocky coasts without fully functioning hind limbs. Choice E:Some smaller sea-dwelling mammals, such as modern dolphins, have no visible indications of hind limbs.