Final answer:
A popular track used in a film that was released before the movie is an example of pre-existing nondiegetic music, whereas the other options depict music created for the film or sounds that are part of the film's narrative world.
Step-by-step explanation:
The correct answer to the question “Which of the following is an example of pre-existing nondiegetic music?” is c) A popular track used in a film that was released before the movie.
Pre-existing nondiegetic music refers to music that does not originate within the universe of the film and was not specifically composed for the film.
Instead, it is music that was already created before the movie and is used to enhance the mood or convey a message to the audience, separate from the diegesis of the film.
Option a) refers to music that is indeed nondiegetic, but it was composed specifically for the movie, hence it is not pre-existing. Option b) describes diegetic music, which is part of the film’s universe, coming from a source within the narrative, like a car radio.
Option d) refers to sound effects that are synced with the on-screen action, which are diegetic if they are sounds that characters would hear in the context of the narrative.