A yellow SVG smiley face is drawn inside a React component, centered on a 960×500 canvas. Missing its mouth, the face shows two black eyes and uses D3’s `arc()` generator to define a semicircular mouth path, though the path renders without a fill or stroke. The face is built with basic SVG primitives, including a yellow circle for the head and black circles for eyes, all positioned relative to a central translation. D3 v7 provides the arc shape, while React 17 manages the DOM rendering.