A face is drawn as a smiley with yellow fill, black stroke, circular eyes, and an arc-shaped mouth on an SVG canvas. The code demonstrates fundamental D3.js DOM manipulation by appending shapes to a group element, using `d3.select`, `d3.arc`, and chained `transition` calls to animate the eyebrows, which move up and down over two-second intervals. The rendering is entirely SVG with a simple animation loop.