A connected scatterplot maps likelihood and score from a CSV file, with points connected by a line to show their sequential relationship. The x-axis uses a linear scale for score, while the y-axis uses a logarithmic scale for likelihood, with custom tick labels for severity levels. Circles mark each data point, and a path generated by d3.line connects them. The visualization is built with D3 v5, using scaleLinear, scaleLog, axisBottom, axisLeft, and SVG rendering.