I will choose Letter C: Finding Friends to do it with
Because seeing a doctor, choosing clothing, or using protective equipment is more of necessities than just finding friends to do it with. Choosing clothing is important because you need to wear something that is comfortable and something that is easy to move in if your going to join a exercise program. Using protective equipment is especially needed because you don't want to get hurt and in order to do certain exercises you need special equipment which this is more critical than finding friends to do it with. Seeing your doctor will help you to know if this exercise is safe for you to complete. That's why I picked FINDING FRIENDS TO DO IT WITH as not as critical as the others.