Interstate Highways in the Southeastern United States Map shows region composed of Florida, Georgia, Alabamba, Mississippi, Tennessee, and South Carolina and parts of North Carolina, Louisiana, Arkansas, and Kentucky. Major cities, including Montgomery, Alabama Tallahassee, Florida Atlanta, Georgia Columbia, South Carolina Nashville, Tennessee and New Orleans, Louisiana, are shown. Interstate highways are shown.
© National Atlas of the United States, January 2013

Which of the following negative externalities would most likely result from adding four new major highways, from north to south, on this map?

Outsourcing of industry
Increase in rail traffic
Rise in air pollution
Decrease in population