This line chart displays the numeric `age` column from a CSV dataset, plotting each row’s age against its row index in file order. The visualization uses D3 v7 with SVG rendering, employing `d3.csv` and `d3.autoType` to load and parse the data, then `d3.scaleLinear` for the x- and y-axes and `d3.line` to generate the path. The line is stroked in blue, with axis labels for “Index (row order)” and “age”. The chart highlights how age varies sequentially across the 12 records, with no interpolation or smoothing applied.