The twelve-tone system of composition was invented by Arnold Schoenberg. The twelve-tone technique is a term referring to a type of musical composition that came to replace the old basis of tonality and contribute a new musical structure. This technique involves the use of tone rows, ensuring that all twelve notes are heard without any emphasis on a specific note.
The third one makes the most sense
A scene can mean two things. A scene can be the setting of a story, or (what I think you are referring to) it can be a segment of an Act of a play. A scene separation within a play is usually included in order to allow time for a change in setting during the performance. A chapter is a segment of a book. So, to summarize, a scene is a segment of a play and a chapter is a segment of a book.
