Nanami is a senior partner in a law firm that represents employers and insurance companies in workers' compensation cases. Two years ago, Nanami hired an associate attorney, Kenta, to assist her in the representation of clients. Since she hired Kenta, Nanami has been assigning Kenta progressively greater responsibility. Recently, she has allowed Kenta to represent clients on his own. Nanami has engaged in which of the following organization processes?

Delegation

Departmentalization

Centralization

Job specialization