Sean’s brain injury could be that he landed on his head on the pavement.
Option A is correct
Brain injury is described as a general term for damage to the brain that can be caused by a sudden impact to the head or by a lack of oxygen to the brain. Brain injuries can range from mild to severe and can have a wide range of effects on a person's life.
Trauma is the most common cause of brain injury and can be caused by falls, car accidents, sports injuries, and other types of accidents. Non-traumatic: Brain injuries can also be caused by non-traumatic events, such as stroke, brain aneurysm, and brain infection.