Select from options: Continue writing the next sentence.

How to flip on the trampoline
Get supervised training first.
Using a trampoline can be very dangerous, so it is best to train first in a safe environment. Training happens in lessons for competitive sports including gymnastics and diving.

a. There, a teacher or coach can help you learn how to use a trampoline properly. Improper use of a trampoline can lead to severe head and spinal injuries.; b. Make sure you choose an area where you can get supervised training before you move on to a more aggressive and demanding sport like spinning or the super smash hose. Get the proper safety equipment before you start practicing.; c. If you're just starting out on the trampoline, start in there with more advanced techniques and forms. Once you get comfortable working with many different jumping techniques, start working on rope jumping.; d. It is a requirement during or after the half jump and half leap and is optional. However, adults may be okay with you practicing your right turning technique for a short period of time.;
Answer:
a.