This example visualizes the total marks of 17 students in a semester as a horizontal bar chart. The SVG rendering uses React and D3 v5, with data loaded from a CSV file via `d3.csv`. Scales include `scaleBand` for student names on the y-axis and `scaleLinear` for marks on the x-axis, while `xScale.ticks()` generates gridlines, and colored rectangles represent each student’s score.