Which of the Following Statements Concerning the Problems and Challenges

Which of the following statements concerning the problems and challenges of urbanization in the United States is FALSE?

A) Suburban sprawl that surrounds most cities in the United States has encroached into former forest, wetland, desert, or agricultural land destroying or fragmenting wildlife habitat.
B) Most of the large cities in the United States have blocks of brownfields-areas of abandoned, vacant factories, warehouses, and residential sites that may be contaminated from past uses.
C) Due to the well-developed transportation infrastructure, most workers in cities in the United States have to commute only one or two miles from home to work.
D) The high density of automobiles, factories and commercial enterprises in urban areas causes a buildup of airborne emissions and thus the atmosphere in many US cities often contains higher levels of pollutants than are acceptable based on heath standards.