Multi-select problem: How does the next paragraph end?

A group of people are seen running around a gym playing a game of dodgeball. the people

OPTIONS: (I) begin to hit the ball against the wall while others watch on the side.; (II) throw balls back and fourth to one another while roaming around.; (III) hit the ball back and fourth while the camera captures their movements.; (IV) hit the ball back and fourth with batons while running back and fourth.;
(II)