If you used colored chalk to create an image on the sidewalk, would it be 2D or 3D art? It would be 2D because the sidewalk is f
lat, It would be 2D because it is not on a computer, It would be 3D because it is an unusual medium, It would be 3D because a sidewalk has a lot of texture,
A principal of design that i see in the image is unity because the room represents the ocean and there are fish surrounding which brings everything together and balances out the message the author is trying to get across. hope that helps :)