Answer:
False
Step-by-step explanation:
Diegetic sound is sound heard by the characters, while nondiegetic sound is not heard by the characters.
Offscreen sound can be either diegetic or nondiegetic, depending on where it originates.
Some examples of offscreen sounds that may be diegetic are car horns, alarms, side conversations, and more.
Offscreen sounds that may be nondiegetic are voiceovers or background music.