A yellow smiley face with black outline, eyes, and an arc-shaped mouth is drawn as an SVG graphic. The React component `App` renders a `<svg>` element, and a D3 `arc()` generator computes the mouth path. Circles represent the face and eyes, with a `BackgroundCircle` component wrapping a `<circle>`. The d3, React, and ReactDOM libraries are loaded via CDN, and the visualization is displayed at 960 by 500 pixels.