This example draws a stylized, smiling face in an SVG canvas using D3.js v7. It centers a yellow circle for the head, adds two dark eyes and rectangular eyebrows positioned above them, and finishes with a curved path for the mouth created via the `arc` function. The code uses `d3.select` to target the SVG element, applies geometric transformations to center the face, and defines all visual properties like radius, spacing, and offsets as numeric constants. All shapes are rendered as SVG primitives—circles, rectangles, and a path—within a single group element.