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

A young woman is standing in the middle of a gym with two dumb bells in her hands and a microphone attached to her head. When the lady finishes talking, she begins riding the elliptical before doing a set of lifting dumb bells. she

Available options: [I] stands still for a moment and then raises the colored bell above her head then goes back and does it again.. [II] finishes the first set and laughs as she talks to the camera.. [III] stops running and takes a break and then begins to talk about the workout.. [IV] then returns on the bike and continues instructing the glass as the other women in the classroom mimic her behavior..
[IV]