This interactive scatter plot visualizes the classic Iris dataset, allowing users to explore relationships between sepal and petal measurements. Two dropdown menus control which attribute is mapped to the x-axis and y-axis. The visualization updates dynamically with each selection, rendering axes, labels, and circular marks within an SVG canvas. Built with React and D3 v7, the example uses `scaleLinear` for continuous scales and `extent` to compute data domains. Data is loaded via D3's `csv` function from a remote gist URL, with numeric values parsed on import. The implementation separates concerns into components for axes, dropdowns, and data marks.