You would like to build a composite report using worker data in which report users...

In composite reports, drill-down functionality is controlled at thecolumn level. By configuring drillable fields on the output columns, users can select values and view related details, such as worker name, location, and manager.

From the Workday documentation:“Drill-down values in composite reports are configured on columns. Columns can be set to include drillable fields, allowing users to select a value and view related data.”

Rows determine how data is grouped, prompts filter initial results, and subreports provide the raw data but do not directly control drillable field configurations.

Therefore, the correct configuration isC. In the composite report columns.