This interactive scatter plot explores relationships between numeric attributes of cars from the auto-mpg dataset, such as horsepower, weight, and acceleration. Users select which columns appear on the x- and y-axes via two dropdown menus built with a reusable `dropdownMenu` function. The plot is rendered as SVG using D3 v5 scales, axes, and a custom `scatterPlot` module, with circles sized at a radius of 10 pixels. The code demonstrates a modular pattern for combining menu-driven selection with d3’s `csv` data loading and linear scaling.