This example renders a simple, cheerful smiley face using React components and SVG. The face consists of a yellow background circle, two black eyes, and a mouth created with a D3 arc path. The React components BackgroundCircle, Eyes, and Mouth are composed within an SVG, with the D3 arc() API generating the curved mouth shape. The rendering is fully data-driven through props like radius, eyeOffsetX, eyeRadius, and mouthRadius, demonstrating a modular approach to building static SVG visualizations with React.