This example shows a simple smiley face rendered as an SVG graphic, composed of a yellow circle with a black stroke, two black eye circles, and a curved mouth path. The visualization is built using React for component structure and D3’s `arc` generator to create the mouth’s arc shape, with fixed dimensions and coordinates. Both libraries are loaded from CDNs, and the face is drawn declaratively within a single `<svg>` element, centered on a 960×500 canvas.