Respuesta :
Answer: Either c or a but i put my money on c and dang this was asked in 2020
Explanation:
The fossil animals B) Had four legs of equal length.
Hypothesis:
In the case when the Scientists hypothesize that early whale ancestors were amphibious.
So the fossil animals should contain the four legs also the length should be equal due to this it should be consistent with the hypothesis. It can't contains teeth or have long & flexible tails.
Find out more information about the hypothesis here:
https://brainly.com/question/2695653?referrer=searchResults