This example uses React and D3 v7 to render a yellow smiley face as an SVG. It constructs the face with three circles for the head and eyes, and a D3 arc path for the mouth, all positioned using computed coordinates and a transform. The code leverages D3’s `arc` API to define the mouth’s inner and outer radii and its angular range, while React handles the declarative SVG markup. The rendering is static, with no interaction or animation included.