Smile Face Part I.
A yellow smiley face is rendered as an SVG, centered on a 960×500 canvas with a thick black outline and two circular eyes. The mouth is drawn using a D3 `arc` path generator with specified inner and outer radii and angular start/end points. The visualization uses React components, with the background circle and mouth explicitly defined, while the eyes are simple SVG circles positioned relative to the center. Rendering is handled by ReactDOM, and the code imports the `arc` function from D3 v7.