This scatter plot compares weight against calories burned, with each point colored by workout type (Strength, HIIT, Cardio, Yoga) using `d3.scaleOrdinal` and `d3.schemeCategory10`. It loads data from an external CSV via `d3.csv`, renders circles in an SVG, and includes gridlines, axis labels, a legend, and a hover tooltip. Animation is not present in the code; the visualization relies on static SVG rendering with interactive mouseover events.