1. Improved income and mobility resulted in

Choose one answer.

Areforms of consumer law.
Bgreat strains on America's highway system.
Cthe development of suburbs.
Dconflict between lower- and middle-class citizens.

Verified Answer :

Improved income and mobility resulted in many things, and most of these answers are related to one another, but the best single option would be "c. the development of suburbs."