This scatter plot explores relationships between numeric attributes of cars from the auto-mpg dataset. Two dropdown menus let users select which columns to plot on the x and y axes using d3.csv, scaleLinear, extent, axisLeft, and axisBottom. The reusable scatterPlot and dropdownMenu functions render an SVG with red semi-transparent circles, axis labels, and gridlines, updating the visualization dynamically via D3’s selection and merge patterns.