This example shows a yellow smiley face built from modular React components, with circular eyes and an arc-based mouth positioned on a yellow background circle. The face is centered within an SVG canvas using a translated group, and each facial feature is defined as a separate React component. The code uses D3’s `arc` API to generate the mouth path, while React handles the component hierarchy and props for sizing and positioning. All rendering is SVG-based, with the face drawn from hardcoded dimensions passed as props.