This pictures describes the term simplicity. Simplicity is where there is no busy backgrounds and the photo is simple. This picture is perfect for simplicity because there is a simple tree for the viewer to see with a simple background.
“Pit ponies of the coal mines are easily the most controversial working horses in history. Here a mining horse poses with his coworkers. In the mechanization eliminated pit ponies altogether.” ~the horse: "ya, im a pit pony. whatcha gonna do?