A simple cartoon face rendered with D3 v5 SVG shapes, featuring a yellow circle head, eyes, eyebrows, pupils, and a mouth with teeth. The eyebrows animate vertically using chained `transition().duration()` calls, moving up and then returning. The code uses D3's `select`, `arc`, and `attr` helpers to construct the geometric elements, with fixed pixel coordinates for facial features. React starter code accompanies the visualization, though the rendering itself relies solely on plain SVG and D3 transitions.