This example creates a cartoon face using D3.js version 7 with SVG rendering. A yellow circle forms the head, while two black circles positioned symmetrically serve as eyes, and an arc path generates the mouth. The code uses `d3.select` to manipulate the SVG, `d3.arc` to define the mouth’s curved shape, and explicit pixel coordinates for eye placement. It demonstrates basic geometric shape composition and coordinate positioning within D3’s data-joining-free API.