Question

what is diegetic sound?

any sound added in post - production

sound that characters in the film can hear

music composed after the film is shot

sound that only the audience can hear

Explanation:

Diegetic sound refers to audio that exists within the fictional world of a film. This means the characters in the film are able to perceive and react to this sound, just as they would to other elements of their on-screen environment. Non-diegetic sound, by contrast, is only audible to the audience. The other options are incorrect: post-production sounds can include non-diegetic elements, post-shot music can be non-diegetic, and sound only for the audience is non-diegetic.

Answer:

Sound that characters in the film can hear