This visualization uses D3.js to render a vertical bar chart of student grades, with each bar representing a module code from the provided CSV data. The chart uses a linear color scale to map grade values from steelblue to grey, while the x-axis displays the numeric grade and the y-axis lists module codes. SVG rendering with animated transitions brings the bars in over one second using D3’s `transition` and `easeLinear`. The axes are formatted using `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom`.