This example shows a classic smiley face drawn with SVG shapes inside a React application. The face consists of a yellow circle for the head, with black circles for the eyes and an arc-shaped path for the mouth. The code uses the `d3.arc()` API to generate the mouth’s path geometry, calculating its inner and outer radii and angular range. Positioning relies on explicit coordinates relative to a translated group element, while React’s `ReactDOM.render` mounts the SVG into the HTML page. The D3 library is loaded via a CDN, and the chart renders with a fixed 960x500 viewport.