This interactive scatter plot explores the Auto MPG dataset from the UCI Machine Learning Repository, displaying car attributes as circles. Users select which columns map to the X and Y axes via dropdown menus. Implemented with D3 v5, the visualization leverages `d3.scaleLinear`, `d3.extent`, `d3.axisLeft`, and `d3.axisBottom` to render the plot. A custom `dropdownMenu` module handles menu creation, while the `scatterPlot` module animates circle positions using `transition().duration(2000).delay()` when data changes. SVG rendering and CSS styling complete the interface.