A bubble chart displays the Iris dataset, plotting sepal length against sepal width for three species, with point size encoding petal length and color distinguishing species. The visualization is rendered as an SVG using D3.js v7, relying on d3.scaleLinear for axes and bubble radius, d3.scaleOrdinal with d3.schemeCategory10 for colors, and d3.axisBottom/axisLeft for ticks. Interactive tooltips appear on hover via mouseover, mousemove, and mouseleave events, while a legend identifies the species.