Final answer:
Interest groups in an iron triangle advocate for legislation that benefits the bureaucracy.
Step-by-step explanation:
The role of interest groups within an iron triangle is to advocate for legislation that is favorable to the bureaucracy. Interest groups work with both the bureaucracy and members of Congress to shape policies and regulations that align with their goals and perspectives. For example, a healthcare interest group might lobby for legislation that benefits healthcare providers and supports healthcare policies endorsed by the bureaucracy.
Learn more about interest groups in an iron triangle