This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to play paintball safely
Wear all appropriate safety equipment (headgear, barrel bag, barrel sleeve, etc.
). Purchase your own equipment or use the equipment provided by the event organizer.

Available options: 1). Consider setting up a small area to have fun. Paintball simulators can take up to 35 minutes, depending on the size of the area. 2). Follow the guidelines in the event manager's manual for low-level activities. You may be surprised how many risks the event organizer has mapped out for you by planning these activities ahead of time. 3). If you're not happy with the safety equipment provided, don't participate. The paintball mask is the most important piece of equipment. 4). Decide how many paintballs you will need. I advise not to use less than 2.5, although it is suggested that you take into account how many people you are hosting the event.
The answer is:
3).