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This example shows a simple smiley face rendered as an SVG graphic, built with React components and D3’s `arc` generator. The face is drawn with a yellow circle for the head, black stroke outlines, two small circles for eyes, and a mouth created using the D3 arc path. The code uses React’s `ReactDOM.render` to mount the component, and D3’s `arc()` API to compute the mouth’s curved path. The visualization demonstrates basic geometric composition, with fixed coordinates for eye placement and radii for the head and mouth.