Select from options: Continue writing the next sentence.

How to ride a mini chopper in a safe way
Keep your mini chopper in good working order.
This will not only make the bike safer, but will also improve its performance.
Wear protective gear, including a helmet and pads for elbows and knees.

Possible answers:
(a). Make sure you have sharp edges (e.g. Knives and scissors do not get in the way).;
(b). Safety goggles will help to prevent accidental hit-and-run. Ride with the front engine turned off.;
(c). Before you start riding, make sure everything is all set. Checking for weak points or missing devices make sure the blades are in good working order (and thus, that there are no dings or dents.;
(d). Mini chopper riders should be at least 12 years of age. If younger, parents need to be extremely careful and supervise their children at all times.;
Answer:
(d).