How would agency structure be best defined?

Agency structure is best defined as the organizational framework that delineates roles and responsibilities. This concept is crucial for any agency because it establishes how various functions are arranged and how individuals or teams interact with one another. A well-defined agency structure helps ensure clarity in operations, facilitates effective communication, and streamlines decision-making processes.

By specifying roles, the agency structure lays the groundwork for accountability, ensuring that everyone knows their responsibilities and how they contribute to the organization's goals. This clarity not only improves internal operations but also enhances collaboration, allowing different departments to work more effectively toward common objectives.

The other options, while related to the functioning of an agency, do not encapsulate the comprehensive nature of what agency structure signifies. Marketing strategies, physical office layouts, and client outreach methods are important aspects of an agency's operations, but they are not defining features of the overall organizational framework that outlines how the agency is managed and operates.