C. II only
Work Step by Step
The definition of Allopatric Speciation tells us that it is "the process of speciation that occurs with geographic isolation, thus making C, only geographic Isolation, the correct answer.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.