Smiley Face Part II
This visualization renders a classic yellow smiley face as a static SVG graphic. It uses a yellow circle for the head with a black outline, two solid black circles for the eyes, and a thick arc for the mouth. The code leverages React for component structure and D3’s `arc` API to generate the mouth path, computing its angles and radii programmatically. The SVG canvas is 960 by 500 pixels, with all elements positioned relative to the center.