This example renders a yellow smiley face composed of SVG shapes, including a background circle, two eyes, and a curved mouth, all positioned within a centered group. The face is built using React components such as `Face`, `BackgroundCircle`, `Eyes`, and `Mouth`, with the mouth drawn using the `d3.arc()` API. The code uses React 18, D3 v7, and SVG rendering, with configurable props for eye offset, radius, and stroke width. The visualization is a static composition demonstrating modular component reuse and D3’s arc generator for path creation.