What feature allows users to quickly visualize their data based on user selections in Power BI?

The feature that allows users to quickly visualize their data based on user selections in Power BI is interactivity tools. Interactivity tools enable users to engage with the visuals in a report, allowing for dynamic interaction. For example, when a user clicks on a certain data point or filter, the visuals will update automatically to reflect that choice, presenting a more tailored view of the data. This includes features such as slicers, drill-throughs, and cross-highlighting, which enhance the analytical experience by allowing users to delve into specific subsets of data or to see correlations among different datasets in real-time.

In contrast, data modeling refers to the process of structuring data relationships and formats in Power BI, and while essential for effective reporting, it does not provide immediate visual feedback based on user interactions. Refreshing pertains to updating the data in reports, ensuring the latest information is presented, but does not facilitate interaction. Data grouping is about organizing data into categories or bins, which can enhance analysis, but it does not inherently provide the immediate feedback or changes in visuals that interactivity tools facilitate.