A grid of 50 randomly generated smiley faces is rendered as SVG elements. Each face uses a yellow circle, two eyes, and a crescent-shaped mouth created with the `d3.arc` API for the mouth path. The React components `Face`, `BackgroundCircle`, `Eyes`, and `Mouth` are composed and translated into a single SVG via the `FaceContainer`. Eye radius varies randomly per face, while other features remain constant. The visualization demonstrates reusable React components combined with D3's arc generator to produce a playful, data-driven collection of smiley faces.