A smiley face rendered as a reusable React component built with SVG and D3’s `arc` generator. The yellow circle, two eyes, and mouth arc are positioned relative to the center, using fixed offsets and radii defined in the code. React 16.9 manages the SVG structure, while D3 v5 computes the mouth’s path with `arc().innerRadius()` and `startAngle`/`endAngle`. The face is drawn statically with no interaction or animation, showcasing a simple integration of React and D3 for geometric shapes.