Done. Why would this be a joke? I'm not into politics, but I've been hearing this in my school...so how about an answer?
I don't think Obama will be assassinated, I think it would have happened by now if an attempt on his life was going to be made. A terrorist attack in the next year? No. In the next 4? Probably. I think someone will try to test the United States under Obama.
Surely the None answer is completely pointless. you said which is more likely meaning if one were to happen then which. If you had said Which one Will happen then the None option is valid
Anything can happen, and since I cannot foresee the future I'm going to say none. Plus I hope nothing bad happens to our country. (or anyone else out side our country)