When Taking a Bus Trip from Boston to Washington, You

Multiple Choice

When taking a bus trip from Boston to Washington, you notice that it is difficult to tell where one city begins and another ends. The suburbs seem just as crowded as the central cities, so that in the end it looks like one large city rather than many. From these observations you can conclude that you are traveling through:

A) metropolitan district
B) megalopolis
C) primary metropolitan statistical area
D) urbanized area