B) They may develop into different species but this is not certain.
Explanation:
Dividing a specie into two groups and proceeding to isolating them based on geography and reproduction may lead the development of different species but it is not for sure.
Reproductive isolation of an organism leads to speciation.
Speciation is the process by which new species of organisms forms.
If a population is divided and isolated, speciation may arise but this is not totally certain.
