This example shows a classic smiley face constructed with SVG shapes and rendered through React. A yellow background circle with a thick black stroke forms the head, while two black circles serve as eyes and an arc path creates the mouth. The code uses React components and hooks into D3’s `arc` generator from the `d3` module to compute the mouth’s path coordinates. The visualization is fully static, with dimensions fixed at 960 by 500 pixels, and demonstrates a simple integration of D3 geometry with React’s declarative rendering in an SVG container.