This practice project demonstrates a simple smiley face rendered as an SVG graphic using React and D3. The visualization shows a yellow circle with a black stroke for the face, two black eye circles, and a mouth formed by a D3 arc path. The component uses React’s declarative JSX to define SVG elements, while the `arc()` API from d3-shape computes the mouth’s curved path geometry. Coordinates are calculated relative to the SVG’s center, with fixed offsets for eyes and mouth radius controlling the facial features.