please answer thissssssssss
![please answer thissssssssss class=](https://us-static.z-dn.net/files/d74/a84703cb501a94accb14f5e9c980efbd.png)
Answer:
Not sure though
but the answer should be 2
as the species should have a common ancestor which led to a
development of two new species and b shows it as X and Y as common ancestor while the Z and Be does have a common ancestor