Which of the following could be considered the most recent common ancestor of living tetrapods? a. a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates b. an armored, jawed placoderm with two pairs of appendages c. an early ray-finned fish that developed bony skeletal supports in its paired fins d. a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes

Video transcript

Hello, everyone here we have a question that says the most recent common ancestor of blank is thought to have been a bony skeleton salamander that moved with side to side bending of fishes but had legs supported by a bony skeleton. A all coordinates be all animals. See all living tetrapods or d all living vertebrates. A salamander has four legs, which is the common characteristic of C all living tetrapods. Thank you for watching. Bye.