A yellow smiley face drawn with SVG sits centered on a white background, featuring two black circular eyes and a curved mouth arc. The face is constructed using React components that render three `circle` elements and one `path` element, with the mouth path generated by the D3 `arc()` generator using specified inner and outer radii and angular start and end points. The face outline uses a thick black stroke on the yellow circle, while the eyes are positioned at fixed offsets from the center.