Sophie was playing volleyball. as she was about to spike the ball over the net, another player on her team accidentally collided with her, and sophie hit her head against one of the metal poles that held up the net. sophie lost 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 suffered no other effects from the blow. sophie experienced what type of brain injury?

Cerebral Concussion.

Explanation:

Brain concussion is a lesion that affects all areas of the brain and temporarily changes its normal functions, such as memory, concentration or balance, for example.  Generally, brain concussion is more often after severe trauma, such as traffic accidents, but it can also occur due to falls or head blows due to contact sports. In this way, even light strokes to the head can cause minor brain concussion.

    However, all brain concussions cause minor brain damage, so if they happen repeatedly or are very severe, they can lead to the development of diseases such as epilepsy or memory loss. Cerebral concussion may also be accompanied by a bruise, which is a more serious injury that can cause bleeding and swelling of the brain, especially after serious traffic accidents or falls higher than the height itself.

what effect does exercise have on the nervous system?

the answer is c.