Which of the following is the best example of dispersal influencing the process of allopatric speciation? A. a newly formed river separates a large population of ground snails. B. a small group of ducks flies on their regular path from Canada to California. C. a small group of finches flies from Japan to a previously uninhibited and isolated island. D. a drop in sea level exposes a new landmass that separates a large population of shrimp.
