This example draws a stylized smiley face using React and D3.js. A yellow circle with a black stroke forms the head, while two black circles serve as eyes, and an arc path creates a smile. The layout uses fixed coordinates and an SVG rendering approach, with the mouth generated using the D3 `arc()` API to define its inner and outer radii and angular range. The visualization demonstrates basic geometric composition in SVG without interactive or data-driven elements.