This interactive scatter plot visualizes the Auto MPG dataset from the UCI Machine Learning Repository, displaying car attributes as circles positioned by X and Y axes. Users select which columns map to each axis via dropdown menus, built with a reusable `dropdownMenu` function that populates `<select>` elements from data columns. The visualization uses D3 v5’s `scaleLinear`, `axisBottom`, and `axisLeft` to render axes and grid lines, while circles transition smoothly with a 2000ms `transition().duration()`. Rendering uses SVG with animated circle placement based on the selected numeric columns.