This visualization displays a horizontal bar chart comparing student marks, using a dataset loaded from a CSV file and limited to the first 10 students. The chart renders as an SVG, with blue bars representing each student’s score on a linear scale, while a band scale positions the student names on the y-axis. The code combines React hooks for state management and data loading with D3 utilities such as `csv`, `scaleBand`, `scaleLinear`, and `max` to compute scales and render tick marks and rectangles.