This example demonstrates a stylized face constructed entirely with D3.js SVG primitives. It draws a yellow circular head, two black eyes, and a mouth path onto a gray background. The face uses fixed pixel coordinates derived from the SVG element’s width and height attributes. The code explicitly imports `select` and `arc` from D3 v5, employs `svg.append` for elements, and positions the mouth via the `arc` generator with specified inner and outer radii and angle extents, all within a React-rendered page.