I'd go with B because it makes sense to me.
An endotherm, also called as a warm-blooded organism, has the ability to generate heat internally. One advantage to being an endotherm, instead of an ectotherm, is that an endotherm can generate its own body heat. This kind of organism can create a favorable level of body heat that is independent of its environment. Endotherms include mammals and birds.
Answer:
they probably have a recent common ancestor
Explanation:
The answer is A
Using energy
The answer is C because many of the funcions that the family used to serve have been outsourced to other institutions
