If you have to write about this (never read this) but you could be broad with what you say. Use things such as the timeline of the story, the actions the characters do and the emotions they feel. Of these things are possible in real life then of course it's realistic.
I don't understand the questions. Word it differently.
An urban area is an area that has developed into a concentration of population and commerce, and a center of regional life and trade. AKA a city.
