This visualization displays movie runtime trends over time, with each bubble representing a film positioned by its release year and runtime in minutes, while the bubble size encodes its rating and the color indicates its simplified genre. The chart uses D3.js v7's `scaleLinear`, `scaleOrdinal`, and `schemeSet2` to map the data, and includes interactive legend items that highlight bubbles of a selected genre on click or hover. Data is loaded from a CSV file and preprocessed in React, with runtime strings converted to minutes and genres consolidated to the top seven categories.