This example displays a smiley face rendered as an SVG graphic, composed of an orange background circle, black eyes, and a mouth formed by a D3 arc path. The React components structure the scene, while D3’s `arc` API generates the mouth’s curved shape using specified inner and outer radii and angles. The face is centered within a 960 by 500 viewport, with all elements positioned via translated SVG groups and fixed coordinate offsets defined in the primary `App` component.