A yellow circle forms a face with black eyes, rectangular eyebrows, and a semicircular arc mouth rendered as SVG shapes. The right eyebrow animates between two vertical positions using `transition().duration()`, while the mouth uses the `arc()` generator from d3-shape with specified inner and outer radii. The code imports `select` and `arc` from D3 v5, appends elements to an SVG canvas sized 960 by 500, and centers the face using fixed pixel coordinates. No external data is loaded; all shapes are directly defined in the script.