What has been an impediment to the development of mass transit systems in North America? 

A)  the expansion of trolley systems 
B)  social stigma about using mass transit 
C)  expensive transit fairs 
D)  a tax system that provides benefits to car drivers

Mass Transit

Public transportation systems designed to move large numbers of people efficiently across cities and other populated areas.

Social Stigma

The negative perception and discrimination associated with a particular circumstance, quality, or person, often based on stereotypes.

Mass Transit Systems

Public transportation networks designed to move large numbers of people efficiently through buses, trains, subways, and other forms of shared services.