This example builds a classic smiley face using React and D3, rendering each facial feature as a separate React component. A yellow circle with a black stroke serves as the background, while two dark circles form the eyes and an SVG path generated by the `arc()` function creates the mouth. The components are positioned using SVG transforms and reusable props, with the mouth arc using `startAngle` and `endAngle` to define its curvature. The visualization demonstrates component-based SVG composition with D3's arc generator.