What happens next in this paragraph?

There are riders on their own horses and they are holding sticks as the horse runs on the grass. one of the men
Pick your answer from:
I. gets off his horse and does a handstand on the grass and he makes a ramp and jumps off..
II. reach down with their stick and hits the ball that is on the grass and it goes rolling fast..
III. jumps off of his horse and pretends to hit a large bull..
IV. is now on the horse behind the other and they are doing expert horse racing tricks..
II.