A React-based smiley face is drawn five times using reusable SVG components. The code refactors a D3 visualization into modular React components, including `BackgroundCircle`, `Eyes`, `Mouth`, and `FaceContainer`, which positions children via a SVG `<g>` transform. Each face uses fixed properties for eye offset, mouth radius, and stroke width. D3's `arc` API generates the mouth path, while ReactDOM renders the composition into the DOM.