Read the following description: In a short story, two rival gangs in a city spend their time
and energy fighting each other, until an outsider advises
them that a company is poisoning their environment with
chemical runoff from its factory. The company is confident
it will get away with it because the rivalry between the two
gangs is the single issue that occupies the city. Learning of
the pollution, the gangs set aside their differences to join
together, taking on the company on behalf of their city.
Which statement best describes how the themes of this passage interact?