A yellow smiley face with animated eyebrows demonstrates basic D3.js DOM manipulation. The face is drawn as an SVG circle with two eye circles, a mouth created using the `d3.arc` path generator, and rectangular eyebrows. The eyebrows animate by chaining two `transition` calls with `duration(2000)`, moving them upward and then back to their original position. The code uses `d3.select` and `d3.arc` from D3 v5, with all elements appended to a centered `<g>` group within an SVG canvas.