A yellow smiley face with animated eyebrows demonstrates fundamental DOM manipulation using D3.js. The face, built with D3 selections, uses SVG circles for the face and eyes, rectangles for eyebrows, and a D3 arc path for the mouth. A transition animates the eyebrow group’s translate transform, moving it upward and back over four seconds. The code imports the `select` and `arc` functions from D3 v5, creating a self-contained interactive visual with no external data source.