Which of the following could be considered the most recent common ancestor of living tetrapods?

Question

Quizplus · Accepted Answer

The sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates is considered to be the most recent common ancestor of living tetrapods. This is because its fin structure and skeletal supports are similar to those of tetrapods, suggesting that it may have been capable of supporting its weight on land and may have been an early precursor to vertebrate evolution on land. The other options listed do not share as many similarities with living tetrapods and are therefore less likely to be the most recent common ancestor.

Which of the Following Could Be Considered the Most Recent