Mouth guards are increasingly becoming required equipment for contact sports. Besides the obvious benefit of protecting an athlete' s teeth, mouth guards also prevent concussions. Youth league referees should penalize teams with players participating without a sanctioned mouth guard. Which of the following most accurately expresses the argument's main conclusion?
A: It is generally preferable to wear mouth guards while playing contact sports.
B: Mouth guards protect teeth and prevent concussions.
C: Mouth guards should always be worn during contact sports.
D: Mouth guards save lives.
Choose A, B, C or D as your solution.
C