This example shows a simple smiley face rendered as an SVG using React components, with each facial feature defined in its own ES6 module. The code uses D3’s `arc()` generator to create the mouth path and React Fragments (`<>`) to group the eyes without extra DOM elements. Static props for positioning and radii are passed from the main `App` component, which centers all elements at (480, 250) with a 960×500 viewport. The visualization demonstrates component separation and declarative SVG construction in a React environment.