A grid of smiling cartoon faces animates with randomly sized eyes. Each face renders as an SVG composed of a yellow circle with a black stroke, two eyes, and an arc-shaped mouth. The example demonstrates how to use React components alongside D3’s arc generator (d3.arc) to build a composite, interactive visualization. The 30 faces are generated with d3.range, while each eye’s radius is determined by a random function, producing a lively, varied display.