This interactive scatter plot displays the classic Iris dataset, letting users explore relationships between four numeric flower measurements. Two dropdown menus, built with the custom `dropdownMenu` module, allow the user to independently select which column maps to the X and Y axes. The visualization is rendered in SVG using d3.v5, with circles smoothly animating to their new positions over a two-second transition. Axes are generated with `axisBottom` and `axisLeft`, which are part of the d3 scale and axis API, providing grid lines and labels.