Final answer:
The term to describe the interdependent relationship between agencies, interest groups, and committees is 'iron triangle'. This concept denotes a close, beneficial relationship among these entities, particularly in domestic policy making.
Step-by-step explanation:
The term used to describe a mutually dependent relationship between bureaucratic agencies, interest groups, and congressional committees or subcommittees is iron triangle. The iron triangle is a concept that represents the closed, mutually beneficial relationships between an agency, a committee, and an interest group. These relationships are characterized by a symbiotic nature, each relying on the others for support, information, funding, and policy development. Critics however, argue that the iron triangle can lead to a policy monopoly or particularism, and they have proposed alternatives like the 'issue network', which potentially offers a more open and fluid engagement with policy making.