Answer:
d. ability to set specific guidelines after receiving a general mandate from Congress
Explanation:
Bureaucracy is the way of governance by the government official following the rules and regulations of the government to ensure proper functioning of the government as well as good governance.
The federal bureaucracy of the United States performs mainly three tasks in the government -- administration, implementation and regulation.
They set guidelines and frameworks for the policies of the government after they receive the mandate from the Congress. They have a very little role in convincing Congress or mediating conflicts.
Hence the correct option is (d).