How does the first paragraph of the passage
contribute to the author's overall discussion of
concussions?
By providing statistics about young athletes on
sports teams, the author offers proof that
concussions are on the rise.
By showing that sports are popular, the author
develops the idea that American sports are
particularly dangerous.
By explaining that most American children
participate in sports, the author emphasizes
scope of the problem.
By stating that sports are played by children who
are still growing, the author illustrates the danger of head injury.