Select the statements below that are true:
a. Youth who are removed from play because they are suffering from a concussion should return to play only after they are back to their regular school activities.
b. An athlete who is experiencing the effects of a concussion performs the same as a youth who doesn't have a concussion.
c. I need permission from the athlete's parent to remove youth from play when a concussion is suspected.
d. There is a possible risk of death if a repeat concussion occurs before the first one has healed.