This example displays a smiley face built with SVG shapes, featuring a yellow circular head, two eyes with white highlights, and a dark mouth arc. The visualization uses React to render the SVG elements and D3’s `arc()` API to generate the mouth path. Coordinates and radii are derived from fixed width and height variables, while a centered group element positions all facial features. The code demonstrates combining React’s declarative component structure with D3’s geometric helpers for a simple, static graphic.