Which situation would probably NOT result in the formation of new species? A) The introduction of a predatory fish that only eats the largest native bass in a Georgia lake. B) A period of stable weather conditions that lasts for hundreds of years, allowing a species of grass to do well. C) A mutation that causes a purple color form to appear in peacock males, which the peahen females seem to either strongly like or dislike. D) Isolation of a population of lizards on an island, which later becomes too distant from the mainland for other lizards to swim to the island.