A grid of 18 identical simplified smiley faces, each rendered as a yellow circle with a black border, two eyes, and a curved mouth, is displayed using React and D3. The faces are built from reusable React components—`FaceContainer`, `BackgroundCircle`, `Eyes`, and `Mouth`—which take width, height, offset, and radius props. The mouth is drawn using D3’s `arc` generator, while the grid is produced by mapping over an array from `d3.range`. All rendering is done as SVG elements.