This interactive line chart visualizes the High and Low values of stock symbols from the National Stock Exchange of India, with an animated transition between the two metrics. A dropdown menu lets users switch between the High and Low series, triggering a smooth data update. The visualization uses d3.csv to load data, d3.scaleBand for the categorical x-axis, d3.scaleLinear for the y-axis, and d3.line to draw the path, with circles marking data points. The update function employs d3 transitions over 1000 milliseconds to animate the line and dots, rendered as SVG elements.