A smiling face built from basic D3.js shapes animates its eyebrows upward and back. The visualization uses D3 v6’s `select` and `append` to construct SVG circles for the skin and eyes, rectangles for the eyebrows, and a `path` defined by `arc()` for the mouth. Eyebrow motion comes from chained `transition().duration().attr()` calls, transforming the eyebrow group’s vertical position. The static SVG canvas is 960 by 500 pixels, with all elements positioned relative to the face’s center.