By agreeing to marry Paris
Answer:
D. Fossils of early tetrapods have many features that are very different than whales of today
Explanation:
I would say this is the correct answer because it pertains to the fossil record providing proof that the tetrapods evolved from whales. This explains why they are very different than whales nowadays despite the fact that they have a shared ancestor. The answer you have chosen is too vague.
The answer is A, in any body paragraph, the main focus is getting your point across!!
Usually the hook at the beginning or the thesis at the end. hope this helps :)