What happens next?

He turns the bike upside down to look at the tire. He takes a nut off of the wheel to get the tire off. he

Choices:
1). uses a tool to get the tire off of the wheel.;
2). puts the nut back on and swings the bike back onto the track while continuing to show off the tire.;
3). takes a shine brush to the tire and smoothies over the rubber.;
4). takes the rubber from the tire and starts to tighten the nut.;
1).