Possible answers:
[A]. adjust the handlebars on the bike..
[B]. finish assembling the bike..
[C]. put the tires on the bike..
[D]. sit on the bike and adjust the wheels..Choose from options above and answer: What most naturally follows?

Two men are assembling a bicycle on a stand. They put the tires onto the bike. They put the pedals on the bike. they
Answer:
[B].