A matrix is a type of organizational structure that involves delegated decision making. In a matrix structure, employees report to more than one manager or leader, usually based on different functions or projects. For example, a software developer may report to both a product manager and a technical manager. A matrix structure allows for more flexibility, collaboration, and innovation in complex and dynamic environments.

The other options are not examples of delegated decision making structures. A de-centralized structure involves distributing decision making authority across different levels or units of the organization, rather than concentrating it at the top. A de-functionalized structure involves breaking down functional silos and creating cross-functional teams or processes. A hybrid structure involves combining elements of different types of structures, such as functional, divisional, or matrix.