This interactive scatter plot visualizes an insurance dataset, showing the relationship between charges and various attributes. It automatically cycles every two seconds between age, BMI, children, and charges on the x-axis, while charges remain on the y-axis. Built with D3 v7, it uses `d3.scaleLinear`, `d3.extent`, and `d3.axisBottom`/`d3.axisLeft` to render animated SVG circles with a custom reusable `scatterPlot` function.