A humorous static smiley face built with React and D3 demonstrates modular SVG composition. The code uses React components (BackgroundCircle, Eyes, Mouth) to render circles and an arc path via D3's `arc()` generator, with animation code commented out. Each component accepts numeric parameters for positioning and scaling, like `eyeOffsetX`, `radius`, and `strokeWidth`. The final SVG is rendered through React's `ReactDOM.render()` into a root div, showing how D3's geometry utilities can be mixed with React's declarative element building.