D is the answer, because all of the above are true. All of the answers make since.
Answer:
art that uses more than one medium
Technique is the way in which an artist creates a work of art, using the media he/she decides to use. The technique and media the artist uses will change the finished results, and the messages and/or feelings it conveys to the viewer.
I may be wrong but I would say the sound production team. Hope this helps ;)
