This scatter plot visualizes the Fisher Iris dataset, showing the distribution of 150 flowers across three species. The D3.js v5 code maps sepal and petal measurements to the x and y axes, with each circle color-coded by iris class (setosa, versicolor, or virginica). Users can switch the variables plotted on each axis via dropdown menus built with D3 `select` elements. The visualization uses SVG rendering with D3’s `scaleLinear`, `axisLeft`, and `axisBottom` utilities to generate the plot, axes, and labels.