Choose the correct sequence of evolutionary events in one form of allopatric speciation, using the codes given below geographical isolation q p. q. ecological i

Choose the correct sequence of evolutionary events in one form of allopatric speciation, using the codes given below geographical isolation Q P. Q. ecological isolation R. increased pre-mating reproductive isolation R. S. increased genetic divergence T selection completed S. (a) R-S-Q-T (b) P-S-R-T (c) R-Q-S-T (d) P-Q-R-T