Which of the following correctly describes drill-down functionality?

Drill-down functionality is designed to allow users to explore data more profoundly. This feature enables users to click on a higher-level data point in a visual or report to reveal more detailed, granular data related to that point. For example, if a user is examining sales data by region and uses drill-down to view sales by city, they gain insight into specifics that may be obscured at a higher summary level. This capability enhances understanding and analysis of the data, making it easier to identify trends, patterns, or anomalies that may not be apparent when only viewing aggregated information.

The other options do not accurately reflect the purpose of drill-down functionality. For instance, hiding lower levels of data contradicts the very nature of drill-down, as it aims to reveal those levels instead. Exporting aggregated data only is not relevant to the drill-down feature, as that would imply a limitation on accessing detailed data. Similarly, restricting data analysis to summary levels would prevent the exploration that drill-down enables, which is contrary to its intent of providing deeper insights.