The correct response that identifies an example of genocide caused by an ethnic conflict is:
Bosniaks and Croats were targeted by Bosnian Serbs during the Bosnian War.
This statement accurately reflects the actions taken during the Bosnian War, specifically noting the targeting of Bosniaks (Bosnian Muslims) and Croats (Bosnian Croats) by Bosnian Serbs, which is recognized by many as constituting acts of genocide.