The following can be considered an artist's media:
- Methods by which art is created (e.g., dance, photography)
- Substrates onto which art is created (e.g., canvas, paper)
- Materials with which to create art (e.g., paint, clay)
The second option, "purposes for which art is created (e.g., aesthetics, functionality)," is more about the intent behind the art rather than the media itself. So, it should not be selected.