Final answer:
For the sentence, the most suitable word is 'converging,' meaning coming together from different directions to meet. Regarding the creation of exurbs, they are a result of urban sprawl and crowds moving into the city.
Step-by-step explanation:
The hundreds of cars on the stadium for the Super Bowl game caused one of the most massive traffic jams in the city's history. The most appropriate word for the blank is b. converging.
This term relates to objects or people coming together from different directions so as eventually to meet. In the context of the Super Bowl game, with a large number of vehicles arriving at the stadium, they would indeed be converging on the location, leading to a massive traffic jam.
As for the question related to the creation of exurbs, the exurbs are typically formed due to a. Urban sprawl and crowds moving into the city. This movement often leads to the development of residential areas that are beyond the suburbs, as people seek more affordable housing options and more space away from the congested city center.