A static smiley face rendered with React and D3’s `arc` generator. The SVG layers a yellow circle for the head, two black circles for eyes, and a mouth path drawn with an arc whose inner and outer radii and angular range define a wide smile. The face is centered via a translated group, with dimensions and offsets set as constants. D3 version 6 provides the arc, while React 17 handles the JSX-based element creation and mounting to the DOM.