Sara and Jon both sustained traumatic brain injuries when they were thrown from Sara’s motorcycle. Sara’s injury was classified as moderate and she has experienced difficulty with organization, problem solving and judgment since the injury. Jon’s injury was classified as severe and he has experienced difficulties with motor skills balance and executive functions. What might explain these differences?
A) different areas of the brain may have been injured
B) Sarah and John may have suffered different primary and secondary events
C) these differences are impossible because both injuries were sustained in the same accident
D) both a and b are correct