A line chart visualizes base experience values for 100 Pokémon fetched from the PokeAPI, with the Pokémon index on the x-axis and base experience on the y-axis. Built with D3 v7, it renders an SVG line plot and circles, using d3.axisBottom and d3.axisLeft for labeled axes. Hovering over a circle triggers a tooltip showing the Pokémon’s name and base experience, with d3.json and Promise.all handling asynchronous data retrieval.