Final answer:
The iron triangle model is associated with the sub-governmental model of public policy. It represents the close relationship between government agencies, interest groups, and congressional committees.
Step-by-step explanation:
The iron triangle model is associated with the sub-governmental model of public policy. The iron triangle refers to the close and mutually beneficial relationship between government agencies, interest groups, and congressional committees or subcommittees. It is characterized by the exchange of resources, information, and support among these three entities, leading to policy influence and decision-making.
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