A user runs a custom report that shows employee performance data using the Rating -...

Workday’s configurable security model determines how much data a user can see in reports. If a user can only see their direct reports, they currently haveconstrained access. To view performance data for all workers, the user requiresunconstrained accessto the data source tied to the report field.

From Workday security documentation:

“Constrained security groups grant members access only to a subset of data… Unconstrained security groups grant users access to all target instances of a securable item.”

Therefore, the user needsD. Unconstrained access to the data source used in the report.