A grid of twenty smiling faces, each rendered as a red SVG circle with a black stroke, black eyes, and a mouth arc, demonstrates a reusable component-based approach to data visualization. Built with React and D3, the code constructs each face from modular React components that accept parameters for geometry and styling. The mouth uses D3’s `arc` API to generate a path, while the face positions are fixed, but eye radius is randomized. The example shows how to compose SVG primitives into structured, parameterized visual elements.