This scatter plot lets users explore an automobile dataset by choosing which attributes to compare on the x and y axes via dropdown menus. The plot itself is rendered as an SVG, with each car represented by a colored, semi-transparent circle. The implementation uses D3 v5, relying on `d3.scaleLinear` for axes, `d3.axisLeft` and `d3.axisBottom` for tick marks, and a custom `dropdownMenu` module to handle the selection interface. Points animate into place using D3's `.transition()` method.