Ineed !

our communities, the economy and much of our lives are organized around our ability to travel easily and efficiently from home to work or school, to shop or play, to receive medical care or just for the sheer pleasure of traveling. (1) this freedom has certain costs that accompany its many benefits. (2) vehicles, public and private, have to be purchased and operated; (3)roads must be built and maintained; laws must be enforced so many people can travel at the same time; and (4) hundreds of thousands of accidents inevitably occur.
to make the meaning more precise, the underlined phrase labeled (4) in paragraph 2 should be changed to
a) thousands and thousands of accidents inevitably occur.
b) hundreds upon thousands of accidents inevitably occur.
c) inevitably, people are involved in hundreds of thousands of accidents
d) accidents inevitably occur hundreds of thousands of times, if not more