A sales manager wants a dashboard that shows sales aggregated by region and identifies high- volume sales by salesperson per region. Which of the following communication techniques best displays this

Defined parameters are static inputs that change the entire report's context based on a single selection, which might not offer the multi-layered drill-down capability needed.

Filter options on a dashboard allow the sales manager to dynamically interact with the data, first selecting a region to see its aggregated sales, and then applying another filter or interacting with the regional view to identify specific high-volume sales by salesperson within that chosen region. This provides an interactive and flexible way to explore the data.

Level of detail refers to the granularity of data displayed, but merely showing a certain level of detail doesn't inherently provide interactive filtering for exploration.

User persona describes a typical user of the system, which is a design concept for understanding user needs, not a communication technique for displaying data itself.