This example shows a yellow smiley face rendered as an SVG graphic, with two eyes and a curved mouth positioned symmetrically around a central point. It demonstrates a React-based approach to SVG visualization using D3’s `arc` generator to create the mouth path. The `BackgroundCircle` component draws the face’s yellow circle with a black stroke, while the eyes are simple `<circle>` elements positioned via fixed offsets. Rendering uses React 16.9 and D3 v5, with all shapes placed inside a `<g>` transform to center the composition.