This example displays a yellow smiley face with black-outlined circular eyes and a defined mouth, rendered entirely as SVG elements within a React application. The face’s geometry is computed using D3’s `arc` generator to create the mouth path, while the head and eyes are plain SVG circles positioned via React JSX. All dimensions, such as eye offsets, radii, and stroke widths, are defined as numeric constants, and the final SVG is mounted into the DOM by `ReactDOM.render`. The visualization primarily demonstrates the integration of React’s declarative component model with D3’s shape-generation utilities for simple, static graphics.