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 refers to the systematic targeting and killing of Bosniaks (Bosnian Muslims) and Croats by Bosnian Serb forces, particularly during the Bosnian War in the 1990s, which included the Srebrenica massacre, recognized as an act of genocide.