Select from options: Continue writing the next sentence.

A young man pulls a wheel out and shows the proper structure of a wheel. He checks the current pressure for the tire and begins pumping air into the tire. he

Select from:
 1). takes a second turn and pumps air into the brakes and clips the handle bars.
 2). smooths out the tire and balances the wheel using a tool.
 3). pulls back on the wheel and continues pumping air into the wheel.
 4). shows the difference between good tread and bad tread as well as when to know when to replace your tires.
Answer:
4).