If you are being graded on your oral presentation, I would highly recommend choosing a topic that you are excited and passionate about. If you love sports, you can talk about a talented player who set records, if you love to read you can talk about a favorite author. As long as you are animated and enjoying the topic, you could be talking about toaster ovens and keep people's attention.
Also, talking about something you're already interested in gives you confidence that will definitely help your grade during public speaking.
you should do ur presentation on how so much needed money is waisted, for example actors and actoress's get paid millions a movie yet, people have to run fundraisers and stuff to get money for charity's and cancer cure stuff like that. oh and the whole matter thing, google it. hope that helped