How do the underlined sentences in the section 'Economic Benefits" on pages 2-3 help to
enhance the author's claims about bike trails?
They explain that building 20 bike trails costs less
than building one parking garage.
They add proof to the author's argument that the
healthiest choice is not always the cheapest
choice.
They summarize the author's points about the costs
of building and maintaining bike trails.
They provide one example of the way that bike
trails can save communities money.