Using D3 v5, a yellow SVG face with circular eyes and rectangular brows renders in the center of the viewport. The code draws the face via `d3.arc` for a smiling mouth and uses `transition()` to animate the eyebrows up and down over two-second intervals. The face’s features are positioned using SVG transforms, and the animation loops twice to lift and lower the brows. Simple shape primitives like `circle`, `rect`, and `path` form the complete facial expression.