Answer:
The correct answer is Divergence in sympatry.
Explanation:
Sympatry: Refers to two similar species that coincide in part or their whole distribution area. There are two ways in which two species can reach sympatry.
• Two species that originated in different areas, expanded and met each other in a concrete geographic place. In this case, both species compete for resources and one of them displaces the other one, or the two species might segregate and make use of different niches.
• Two species suffered sympatric speciation, they both have the same ancestor and originated in the same place. In the distribution area of the original species, there were differences in the populations´ microhabitats, and they were submitted to different environmental pressures, such as dense or clear forest, presence or absence of predators, among others. These pressures could lead to certain differences that could have driven to the final isolation of one of the populations. These populations suffer genetic changes due to the environmental conditions that are inheritable.
What might be occurring in the exposed example is that the species is diverging in sympatry, as some females prefer domesticated plant species while some other prefer wild species. These moths will probably develop strategies and structures that make them more adapted to each environment, which will eventually make them be different from each other and will probably cause speciation.