This example renders a cheerful yellow face as an SVG graphic within a React application. The face consists of a large yellow circle with a black stroke, two black eyes positioned symmetrically, and a mouth drawn as an arc using the `d3.arc` helper from D3 v7. React 17 constructs the SVG elements declaratively, while D3’s arc generator builds the mouth path with user-defined inner and outer radii and start/end angles. The layout is fixed, with coordinates computed relative to the center of the canvas. The data is hard-coded in the JavaScript source rather than loaded from an external dataset.