This example renders a classic smiley face as a static SVG graphic using React for structure and D3’s `arc` generator to create the mouth. The code defines the face’s dimensions in constants—such as the center position, eye offset, and radius—and then draws a yellow circle with a black stroke, two solid eye circles, and a curved mouth path, all inside a single `<g>` transform. The visualization demonstrates how to combine React’s declarative JSX with D3’s geometric helpers for simple, reusable shape drawing.