You want the ability to view every summarization in the composite report by Location.

Composite reports combine multiple subreports, and their summarizations depend on the fields configured in the subreports themselves. To enable consistent grouping and summarization across the entire composite report, theLocation field must be included as a Detail Data field in all the subreports. This ensures that each subreport provides the Location context required for composite-level summarization.

From the Workday binder:“Composite reports aggregate results from multiple subreports. To summarize or drill consistently on a specific field, that field must exist as a Detail Data field in all subreports included in the composite.”

If Location is only included in one subreport, summarizations in the other subreports would not align, and Location-based grouping would fail. Similarly, making Location drillable only affects drill-down options, not summary-level grouping across the composite.

Thus, the correct answer isA. Include Location as a Detail Data field in all the subreports.