A yellow smiley face with black-stroked outline, eyes, and a curved mouth is rendered as a reusable React component composition. The face is centered in an SVG canvas using a group transform, with facial features positioned via relative offsets and radii. The mouth uses a D3 `arc` generator with specified inner/outer radii and angles, while the face structure is built from separate React components for the background, eyes, mouth, and container. The example demonstrates React’s component model combined with D3’s geometric shape API to create a modular, parameterized visualization.