You need to create a presentation. There are five presentation topics you can see in the screenshots down below. I have already chosen the presentation topic i.e. "A Historic Volcano Eruption". You have to make a presentation on that topic. Let me make a more simple for you. I have found the historic volcano eruption i.e. "The Tambora Eruption". You have to have make a presentation on that topic. I also attached the screenshot of how many slides is required. If you have any question you can message me.