I think the answer is maybe sound of the surf or produced may recorded live
The object being referred to in this item is the medium. The answer is letter D. Some of the most common material used by the artists are oil paints, tempera, marbles, and bronze. This is the physical object used by the artists to convey their messages to audiences through the senses.
Negative space defines and emphasises the main subject of a photo, drawing your eye to it. it provides "breathing room", giving your eyes somewhere to rest and preventing your image from appearing too cluttered with "stuff". all of this adds up to a more engaging composition.