Write the next sentence in the following story.

Two teams are gathered inside a building gym. they

pick from the following.
[I] are lining up against each other behind bleachers.;
[II] are playing several sport of fencing.;
[III] are in a tug of war to remove other men from the team.;
[IV] are engaged in a game of dodgeball.;. The answer should be
[IV]