What does Drill Down functionality allow users to do in Power BI?

Drill Down functionality in Power BI enables users to interactively explore data dimensions more thoroughly by providing a mechanism to view more detailed data associated with a specific data point in a visual. When users engage the Drill Down feature by clicking on a data point, they can see a deeper level of granularity, which allows for a better understanding of the underlying data relationships and trends.

For instance, if a report visual displays sales data by region, users can click on a specific region to drill down and examine the data by individual stores within that region. This capability makes it easier to investigate specific aspects of the data, facilitating deeper insights and informed decision-making.

The other options reflect different functionalities that do not align with the Drill Down feature. While viewing data in a summarized format focuses on aggregating information, accessing reports from other Power BI accounts pertains to report sharing and collaboration. Extracting data for offline use involves exporting data, which is distinct from the interactive exploration that Drill Down offers. Thus, the focus on providing an interactive pathway to more detailed insights makes this answer a clear match for what the Drill Down functionality accomplishes in Power BI.