D3_js
This example renders a smiling face using SVG within a React application, with D3.js providing the arc path for the mouth. The face features yellow circular head, black stroke, two eyes, and a mouth created via `arc()` from the d3-shape module, with specified inner and outer radii and start/end angles. Data visualization is minimal, focusing on geometric composition rather than data encoding. The visualization is static, relying on D3’s arc generator and React’s declarative JSX to construct the SVG elements.