The Hawthorne and Apple Maggot Flies Appear to Have Become

Multiple Choice

The Hawthorne and apple maggot flies appear to have become reproductively isolated from each other largely because:

A) they occur on different sides of the Mississippi River.
B) they have different mating behaviors.
C) they occupy different parts of the habitat.
D) they have adapted to two different hosts.
E) they mate at different times of the day.