The answer, I think, would be C.
Why?
Because, if you look at the embryos in their earliest stages, they all look almost exactly the same. They also all have gill slits, which scientists think proves that the three animals are all related. Weird, right?
Hope I haz helps, sorry if I'm wrong ouo.
~Potato.
Copyright Potato 2019.
Answer:
As a cell grows, its surface area-to-volume ratio decreases
All the Robins in Austin Texas
Note:
Please double check! I might be incorrect.
Merry Christmas! :)
