A yellow smiley face is drawn in SVG using React components that compute geometric values and a D3 arc generator for the mouth. The face consists of a filled circle with a black stroke, two eye circles positioned via offset constants, and a mouth path created with `d3.arc()` using defined inner/outer radii and angular ranges. All elements are rendered inside a single `<svg>` element, with the face centered using a `translate` transform. The example demonstrates combining React's declarative rendering with D3's shape-generating APIs to produce static vector graphics.