A yellow smiley face is rendered as an SVG graphic, featuring circular eyes, an arc-based mouth, and a blue rectangle labeled “Math.” The example demonstrates integrating React with D3 by using the D3 `arc` generator to create the mouth path, while React manages the SVG elements. The face is drawn with a yellow circle, black stroke, and text symbols for eyes, all positioned via SVG transforms within a fixed 960x500 viewport.