Sophie Is Playing Volleyball

Multiple Choice

Sophie is playing volleyball. As she is about to spike the ball over the net, another player on her team accidentally collides with her, and Sophie hits her head against one of the metal poles that holds up the net. Sophie loses consciousness for a few seconds and, in a daze, she walked to the bench to sit down. Although she had a headache for a couple of weeks, she suffers no other effects from the blow. Sophie has experienced what type of brain injury?

A) a contusion
B) a concussion
C) a laceration
D) a cerebrovascular accident