This example builds a simple smiling face from geometric SVG shapes using React components and D3.js. A yellow circle with a black stroke forms the head, while two small circles serve as eyes and an arc path, generated with D3’s `arc` API, creates the mouth. The composition is centered and scaled via SVG transformations, with measurements for facial features passed as props. The code relies on React’s component model and D3’s arc geometry to render the static vector illustration.