Final answer:
The phrases 'We must acknowledge the failures of the international community during this tragedy' and 'Our efforts to prevent the genocide were insufficient' from President Clinton's remarks best represent his and the international community's response to the Rwandan genocide.
Step-by-step explanation:
The most fitting phrases from President Bill Clinton's remarks in Kigali on the Rwandan genocide that support the understanding of his reaction and the international community's response to the event would be A) We must acknowledge the failures of the international community during this tragedy and C) Our efforts to prevent the genocide were insufficient. These statements directly address the shortcomings and the lack of adequate action by the international community, including the United States, during the 1994 Rwandan genocide, wherein the Hutu majority began slaughtering the Tutsi minority and their supporters, leading to around 800,000 deaths.
President Clinton later expressed regret over not intervening to stop the genocide, indicating that these phrases accurately represent this sentiment and the historical reality of the event.