This example renders a classic smiley face as a static SVG graphic using React and D3’s arc generator. The code defines a yellow circle with a black stroke for the head, two black eye circles, and a curved mouth path created by `d3.arc()` with inner and outer radii and fixed start/end angles. Geometry is computed from hard-coded width, height, and offset constants, and the entire drawing is positioned via a centered `<g>` transform. The visualization demonstrates composing basic D3 shape generators within a React component to produce a simple, annotated illustration.