The siren of the fire truck is more audible at night than during the day due to the presence of various barriers in the daytime that absorb sound.
The correct response is the initial section.
A. The next to last sentence indicates that “...Susan and Claire felt that they wouldn’t perceive things similarly,” thus altering their viewpoints on how they will view situations differently from now on.
The theme reflects upon the viewpoint by exposing a gap within the system.