Smiley face part 1
Five identical smiley faces are drawn in a vertical column, each using the same parameters for size, eye and mouth placement. The visualization demonstrates modular React component composition, with separate `Face`, `BackgroundCircle`, `Eyes`, `Mouth`, and `FaceContainer` components. The rendering uses SVG shapes, and the mouth path is generated with the d3 `arc` API, while d3's `range` function creates the repeated faces.