A bubble chart from a CSV dataset shows the correlation between average horsepower, torque, and highway MPG for electric vehicles. Each circle's position encodes horsepower on the x-axis and torque on the y-axis, while its radius scales with highway MPG and color distinguishes vehicle make. Interactive tooltips display the make on hover. Built with D3 v7, it uses `d3.scaleLinear`, `d3.scaleOrdinal`, `d3.axisBottom`, `d3.axisLeft`, and event handlers, rendering in SVG. A legend encodes bubble size and color.