Answer:
This question is incomplete, but the chart mentioned can be found in other Brainly questions of the same type. The best answer, given the chart and the options, would be: The common ancestor of rabbits, fish, and cats had fins.
Explanation:
It might sound strange because fish live in water, do not use air to breathe, and structurally look very different from mammals like rabbits and cats. However, given the theory of evolution, it is important to know that many of these animals have evolved from shared ancestors.
In the case of mammals and fish, even though they would seem totally different, they share commonalities in their bodily structures that show that despite their current differences, they had once a common ancestor and that the differences acquired were the result of evolutionary forces that were influenced by environmental needs.
Fins, in fish, would be the structural equivalent to the hands or front legs of cats and rabbits. During their embryonic stage, fish, cats, and rabbits all present either fin-like or actual fins and while in cats and rabbits this evolves and differentiates to become the actual front legs, in fish they remain because their environment requires it.
