A yellow smile face rendered with React and D3 v5, drawn as SVG shapes. The face consists of a circle for the head, two smaller circles for the eyes, and an arc-generated mouth using the `d3.arc` API. The entire face group is rotated 25 degrees, with the mouth’s start and end angles set via math constants. The code uses React to create JSX elements and the `arc` function from D3 to compute the mouth’s path, all styled with inline attributes like fill and stroke.