This example is a React component that renders a classic smiley face using SVG. It shows a yellow circle with a black outline, two solid black eyes, and a curved mouth drawn as an arc. The code imports the `arc` function from d3 to create the mouth’s path, while React composes SVG elements like `<circle>` and `<path>`. The face is centered in a 960 by 500 viewport, with the background circle’s radius and stroke width defined in the component. D3 v5 handles the geometric arc, while React renders the static result without interaction.