Smiley Face I
A yellow smiley face rendered with SVG sits centered in the viewport, built from a filled circle for the head, two smaller circles for eyes, and a curved path for the mouth. The code uses React for the component structure and D3’s `arc` generator to create the mouth shape with specified inner and outer radii and angular extents. All elements are positioned relative to a central transform, with fixed pixel dimensions for the head, eye offsets, and stroke width. The rendering occurs entirely in SVG, with no external data source.