Speciation can occur when two populations of a species become separated from each other. What is the best explanation for why speciation occurs?
OA. Populations of the same species continue to interbreed even after they have been separated.
OB. Populations of the same species living in different environments tend to change in different ways.
OC. One of the populations tends to begin breeding with a different species and produces sterile offspring,
OD
One of the populations loses the ability to produce viable offspring and becomes extinct.