For Which of the Following Reasons Would We Expect Rapid

For which of the following reasons would we expect rapid speciation to occur among animals with complex sexually-selected behavior patterns?

A) The timing of reproduction is behaviorally mediated.
B) Behavioral differences usually reflect physiological differences.
C) They have difficulty in identifying members of their own species and often mate with members of other species.
D) They make sophisticated discriminations among potential mates.
E) They find mates more quickly and efficiently.