A React and D3 v7 composition renders a grid of yellow smiley faces, each built from reusable SVG components. The face includes a circular background, two eyes, a rectangular nose, and a smile-shaped arc generated with `arc()`. Five identical faces are rendered via `map()`, each positioned by a `FaceContainer` that translates an SVG group to the center. The example demonstrates component-based visualization, with D3 used specifically for the mouth's path calculation and React managing SVG element structure.