Answer:
Which sentence is unnecessary and could be eliminated without disturbing the flow and information of the paragraph?
Concussions are very serious injuries.
Although there is no cure for Parkinson's disease, it can be managed
through surgery and/or medications.
Repeated concussions may increase a person's risk in later life for
dementia, Parkinson's disease, and/or depression.
Rest includes both physical and cognitive rest (including going easy on
such activities as school work, television watching and text messaging).
