This example creates a cheerful smiley face entirely with SVG shapes inside a React application. The visualization uses D3 version 6 to append a large yellow circle for the face, two smaller black circles for asymmetrical eyes, and a curved path for the mouth. The mouth is generated using D3’s `arc()` function, which constructs an annular sector path. The code explicitly sets SVG attributes like `fill`, `stroke`, and `transform` to position and style each geometric element on a 960 by 500 canvas.