A single yellow circle with a thick black outline renders in the center of an SVG canvas. The example demonstrates the initial step of constructing a smiley face, showing only the head shape without facial features. Built with React and ReactDOM, the code uses vector graphics primitives, specifically the SVG `circle` element, to define the shape with explicit center coordinates, radius, fill color, and stroke properties. The `cx`, `cy`, and `r` attributes are set directly in the React component's JSX.