This bar chart visualizes the relationship between time invested in studying and marks scored for 15 students, using a horizontal bar layout. The chart maps time spent studying to the y-axis against a blue horizontal rectangle for each student, whose width encodes the marks obtained. The visualization is built with React and D3 v5, using `d3.csv` to load data, `d3.scaleBand` and `d3.scaleLinear` for axes, and `d3.max` to determine the scale domain. The SVG rendering includes custom axis lines and labels, with data sourced from a CSV file.