Which of the following is LEAST likely to result in speciation?
A) Random mating among members of a large population of a species
B) Occurrence of hybridization between individuals from two diff erent species
C) Development of diff erent mating behavior by some members of a species
D) Emigration to a specialized microenvironment by some members of a species
E) Formation of a physical barrier that blocks gene fl ow between members of a species