This area chart shows the average reading score for students grouped by their parental level of education, ordered from “some high school” to “master’s degree.” The visualization uses d3.v7 and SVG rendering, with d3.csv to load the dataset, d3.rollups and d3.mean to aggregate scores, and d3.scalePoint with d3.area and d3.line to draw the filled area and outline. Interactive tooltips appear on hover over each data point.