This scatter plot visualizes the relationship between a startup's age and its active user count, with each circle representing a company from a CSV dataset. Built with React and D3 v7, the visualization uses linear scales derived from data extents to position circles on age and user metrics. Users can click any circle to highlight it, which changes its fill to white with a black stroke. The chart includes labeled axes for company age and active users, with the SVG rendering responsive to container dimensions via a ResizeObserver.