An authority matrix in Pega is used to manage complex decision-making processes that depend on various levels of organizational authority:

C. Any overtime -> Manager of Supervisor. This condition involves hierarchical decision-making where approval authority escalates beyond the immediate supervisor, making it appropriate for an authority matrix to define and automate the approval paths based on the organizational structure.

D. Regular 40 hours -> Supervisor of Employee. Although this appears straightforward, using an authority matrix helps in organizations where different supervisors might have varying levels of authority based on departmental rules or other factors, thus standardizing the approval process across diverse units.