To start, press the flag and wait. Press the colored buttons to show a trivia question... when you want to choose an answer, press s. when you want to go to your next question, press the space bar.
Basically, I programmed the sprites to disappear when any one of them are pressed. And then I made the yes and no buttons to appear when the s key was pressed.... BTW, this took FOREVER to make, and I am very proud of it. Have an awesome day!!!