Final answer:
Empowering Congress is not a tactic for an agency to avoid political control, as it would increase legislative oversight, contrary to the agency's goal of maintaining autonomy.
Step-by-step explanation:
A tactic that is NOT available to an agency that wants to avoid political control is empowering Congress. Empowering Congress would give a legislative body more oversight and control over an agency's actions, which is contrary to the agency's aim of maintaining autonomy and avoiding political control. Instead, agencies might engage in tactics such as opening government records to citizen scrutiny, requiring annual evaluations by the president, or forcing agencies to hold public meetings, all of which can increase transparency and public trust but do not necessarily reduce political control like empowering Congress would.