This interactive scatter plot displays the Iris dataset, allowing users to explore relationships between sepal and petal measurements across three flower species. Dropdown menus select which features appear on the x- and y-axes, and hovering over any point highlights all points of the same species while dimming others. The visualization uses D3 v7 with `scaleLinear`, `axisBottom`, and `axisLeft` for scales and axes, and updates the SVG via a `render()` function. CSV data is loaded with `d3.csv`, and species colors are mapped explicitly in the code.