Which type of visualization in Power BI allows users to filter other visuals on the same report page and search for values?

The correct choice is Slicer because it acts as an interactive filtering tool that allows users to refine the data displayed in other visuals on the report page. When a Slicer is used in Power BI, it provides a mechanism for users to select one or more values, which then filters the data for corresponding visuals, affecting their output in real-time. This feature enhances the interactivity and usability of reports, enabling users to focus on specific data points they are interested in.

In contrast, the other visual types serve different primary functions. A Funnel is typically used to visualize processes and stages, which does not inherently include filtering other visuals. A Matrix shows data in a grid format but does not provide filtering capabilities directly. A Scatter chart is designed to display relationships between variables, yet it lacks the functionality to filter other visuals on a report page. Thus, the Slicer is uniquely positioned as the tool that facilitates user-driven filtering and searching within reports.