A smiling face rendered as an SVG in React uses three modular components—BackgroundCircle, Eyes, and Mouth—split into separate files with ES6 modules. The Mouth component builds its arc path using d3.arc, while the other shapes are plain circle elements. The app imports ReactDOM to render the face inside an SVG group at the canvas center. React fragments wrap the paired eyes to avoid extra DOM nodes. The visualization demonstrates component reuse and separation, with fixed numeric constants defining stroke width, eye offsets, and mouth dimensions.