This example shows a smiley face constructed from SVG primitives, with a yellow circular head, two dark eyes, and a curved mouth. The visualization is built using React 18 for component rendering and D3 7’s `arc` generator to define the mouth’s path geometry. The drawing is centered via a `translate` transform, and all shapes—circles and a path—are rendered as SVG elements within a fixed 960×500 canvas. The code demonstrates a simple, composable approach to combining React’s declarative structure with D3’s geometry utilities.