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This example displays a simple smiley face rendered as an SVG graphic, built with React and D3. The code uses ReactDOM to mount the component and the D3 `arc` function to generate the mouth path, with the face composed of three circles and a stroke. The drawing is centered within a fixed 960×500 viewport, using D3’s method chaining to define the arc’s inner and outer radii and angles. The visualization demonstrates the integration of React components with D3’s geometry utilities for static, declarative graphics.