A grid of identical smiley faces renders in SVG via React, each composed of a yellow circle, two eyes, a red nose, and a D3 arc-based mouth. The `Face` component assembles the `BackGroundCircle`, `Eyes`, `Nose`, and `Mouth` subcomponents, with `d3.arc()` defining the mouth’s inner and outer radii and angles. The example uses d3.v6’s `range` to generate 18 faces, all sharing the same fixed parameters, demonstrating parameterized component reuse without variation.