Respuesta :
I think the answer is B, B-cause the formula is base pair times mutation, over number of species. They are asking how much time will pass before these species differ by a total of 8 base pairs, with the mutation rate of 80 million. Therefore 8 times 80 million is 640 million. Divide that by the number of species we got, which is two, and ya get 32 million. Ba Baum! Anyways I hope this helps!