A yellow circular face with black eyes, eyebrows, and a curved mouth is drawn in SVG using D3.js v6. The face’s eyebrows animate upward and back down over four seconds via chained `transition().duration()` calls on an SVG group’s `transform` attribute. The mouth is created with the `d3.arc()` helper, while circles and rectangles compose the eyes and brows, all centered within an SVG canvas using a translated group.