This interactive scatter plot explores the relationship between the Happiness Score and five selectable y-axis attributes (Economy, Social Support, Generosity, Freedom, and Perception of Corruption) using the Iris Dataset. A dropdown menu updates the y-axis scale and label dynamically, with circles rendered via React and SVG. The visualization uses d3.scaleLinear for axes, d3.csv for data loading, and d3.format for tick labels, all coordinated through React state to trigger re-renders.