A smiley face drawn with SVG shapes animates its eyebrows upward and back down. The example demonstrates fundamental DOM manipulation with D3.js, using `d3.select` to append a yellow circle, two eye circles, arc-based mouth and eyebrow paths, and a rectangular eyebrow. D3 transitions (`transition().duration(2000)`) animate the eyebrow group’s vertical position. The code imports `select` and `arc` from D3 v5, rendering to an SVG canvas with hard-coded dimensions.