A smiling face is drawn with SVG circles, rectangles, and a path, using D3 v7 to construct each facial feature. The animations show the eyebrows rising and falling through chained `transition` calls, while the mouth is created with a `d3.arc` path. The `<svg>` element is selected and manipulated via `d3.select`, and all shapes are translated to the center of a 960×500 canvas.