horses and donkeys can mate, but they produce a mule, which is always a sterile animal. this means that they…

horses and donkeys can mate, but they produce a mule, which is always a sterile animal. this means that they cannot produce viable offspring and are isolated. reproductively geographically temporally behaviorally

horses and donkeys can mate, but they produce a mule, which is always a sterile animal. this means that they cannot produce viable offspring and are isolated. reproductively geographically temporally behaviorally

Answer

Answer:

A. reproductively

Brief Explanations:

Since horses and donkeys produce sterile mules and can't have viable offspring, this is reproductive isolation.