This interactive scatter plot visualizes the Iris dataset, displaying measurements of sepal and petal dimensions for three flower species. Users can dynamically change which measurement appears on the x- and y-axes using dropdown menus powered by a custom DropDown component. The plot uses D3.js v5 with SVG rendering, employing `scaleLinear` for axes, `axisBottom` and `axisLeft` for tick marks, and colored circles to distinguish species. Data is loaded from a CSV file and parsed with D3's `csv` function.