This example renders a smiling face composed of SVG shapes, including a yellow background circle, two eyes, and a mouth created with a D3 arc path. The face is built from reusable React components—BackgroundCircle, Eyes, Mouth, and FaceContainer—that accept props for positioning and sizing. The FaceContainer establishes an SVG coordinate system centered at a specified point, while D3’s `arc` generator defines the mouth’s curved shape. The visualization demonstrates how React and D3 can be combined to create declarative, parameterized graphics.