A circle, initially positioned at the center of an SVG canvas, follows the mouse cursor across the screen. The React component renders the circle with fixed initial coordinates and relies on React’s virtual DOM to update its position dynamically. Using React 16.9 and ReactDOM, the example demonstrates basic state-driven rendering without external event listeners. The circle’s movement is implied by React’s re-rendering, though the code shown lacks a mouse event handler. It serves as a minimal illustration of SVG integration within a React application.