What type of divergent adaptation occurs when two isolated subpopulations become separated and divergent adaption occurs slowly (a) allopatric speciation (b) peripatric speciation (c) parapatric speciation (d) sympatric speciation

The correct option is A.
Allopatric speciation is said to occur when a particular biological population of the same specie get separated from each other to the extent that their isolation prevent them from exchanging genetic materials with each other through reproduction. This type of speciation is also called geographical speciation because, the population usually get separated geographically with one been removed or restricted to a new location. This kind of separation of specie leads to the development of divergnet adaptations.

A. Allopatric speciation is the answer

Iam not sure but to me it with be a or dsorry if i was late! hope this ! : )if you really want me to find out the answer that is correct tell me and i will do more research but the a or d makes sense to me.