This line chart shows the relationship between study hours and average total marks, with a single line tracing how marks change as study time increases. The chart uses D3.js v7 to load CSV data from a GitHub gist and render an SVG visualization, employing `d3.line()` to generate the path and `d3.scaleLinear()` for both the x- and y-axes. The data, which includes fields for StudyHours and AverageTotalMarks, is fetched asynchronously via `d3.csv()` and converted to numeric values before plotting. Axes are appended using `d3.axisBottom()` and `d3.axisLeft()`, with the line styled as a steelblue stroke without markers.