This example renders a simple cartoon face using React and D3’s `arc` generator. A yellow background circle is drawn with a black stroke, while orange-filled eyes and a mouth-shaped path are positioned using SVG coordinates. The code imports `BackgroundCircle` as a reusable component and uses ReactDOM to mount the SVG to the page. The mouth’s shape is defined by setting inner and outer radii plus start and end angles, all computed with D3 v7.