This example renders a stylized face using React components and D3’s `arc` generator for the mouth. The face is composed of separate SVG elements—a yellow background circle, two eyes, and an arc-shaped mouth—arranged within an SVG container via a transform. The `Face` component receives props for geometry such as eye offset, radius, and stroke width, and the code uses React 16.9 and D3 v7 to build the SVG output dynamically.