This example draws a stylized face using D3.js version 7, rendering a yellow circle as the head and a single arc-shaped path for the mouth on an SVG canvas. The code uses `d3.select` to target the SVG element, `.append` to add shapes, and `d3.arc()` to generate the mouth’s path with specified inner and outer radii plus start and end angles. All geometry is positioned relative to the SVG’s width and height, which are read directly from the element attributes. The result is a simple, static face composition built entirely with D3’s SVG helpers.