A bubble chart displays electronics data, plotting screen size on the x-axis against price on the y-axis, where each circle’s radius encodes horizontal resolution. Built with D3 v7, it uses `d3.csv`, `d3.scaleLinear`, and SVG circles, with an interactive tooltip triggered by `mouseover`, `mousemove`, and `mouseleave` events. The chart animates opacity on hover, and axes are generated via `d3.axisBottom` and `d3.axisLeft`.