This example uses D3 v7 to create an animated, smiling face entirely with SVG shapes. The scene is drawn on a yellow circle, with the code constructing separate groups for the eyes, eyebrows, and mouth using circles, rectangles, and a path built with D3’s `arc` function. The eyebrows animate with a chaining `transition` on the group’s `transform`, moving them up and down over two seconds. The visualization is rendered through D3’s selection and attribute methods, with an imported `arc` API defining the mouth’s curved shape.