This example shows a simple, stylized face constructed entirely from SVG shapes using D3 v6. It displays a yellow circle for the head, two black circles for eyes, and a red arc-based path for the mouth. The code uses the `select` API to initialize the visualization and `svg.append` to add elements. Geometry is precisely positioned using the `attr` method with transform and coordinate values, while the mouth is defined through a custom arc with specified inner and outer radii and angular parameters.