A cheerful cartoon face rendered in SVG appears on screen, built entirely with D3.js v5. The code uses `d3.select` and `d3.arc` to construct a yellow circle head, red eyes, blue rectangular eyebrows, and a purple arc-based mouth. The eyebrows animate via chained `transition()` calls, sliding inward and outward over three-second intervals. The example demonstrates composition of SVG primitives and basic animation without external data.