A red emoji face with black eyes, angled eyebrows, and a curved mouth demonstrates basic DOM manipulation in D3.js v5. The SVG elements are selected via `d3.select` and positioned using translation transforms. The eyebrows animate by chaining `transition().duration(2000)` calls, moving them down and up repeatedly. The code uses ES6 imports (`select`, `arc`) and raw SVG attributes like `attr('d')` for the mouth path. A solid blue background is set via inline CSS styling.