This example shows a yellow smiley face rendered as an SVG, with two black eyes and a curved mouth drawn using the D3 arc generator. The face is built with React components that compute circle positions and the mouth path from fixed numeric constants. D3 v5 provides the `arc()` function for the mouth, while React 16.9 handles the SVG elements and rendering. The visualization is a simple static composition, with all shape dimensions and offsets defined in JavaScript and transformed into a centered group within the SVG canvas.