A minimal smiley face rendered as an SVG using React components, with d3’s `arc` generator drawing the mouth. The face consists of a yellow circle, two black eye circles, and a curved mouth path, all centered and scaled relative to a fixed viewport. React 17 manages the DOM, while D3 v6 provides the arc shape’s path data. The example demonstrates combining React’s declarative JSX with D3’s geometry utilities for simple, static SVG composition.