Keep it easy. You are not alone. When I was in school I just declined all questions and said “I don't know”. Believe me not, but I don't regret it because the school gave me nothing except stupid classmates who teased me. Some teachers told me that I'm not a stutterer I'm just stupid. Just prepare your presentation visually well, create cool slides, and design. Show them that you have done a job. If you can't speak, just ask ChatGPT to make a poem or rap song with all your information from the presentation. It could be stupid but you'll be very successful at it and you'll get a good mark.