This interactive scatter plot visualizes the classic Iris dataset, allowing users to explore relationships between sepal and petal measurements. Three flower species are color-coded in the SVG output. Dropdown menus dynamically change the axes, and D3 transitions animate the points to their new positions. The code uses `d3.csv` to load data, `d3.scaleLinear` for axes, and `d3.select` to manage the interactive controls.