The Chief Way That Administrative Agencies Exercise Power Over Policy

The chief way that administrative agencies exercise power over policy is through

A) rulemaking,or deciding how a law will operate in practice.
B) judicial interpretation,or mandating the constitutionality or unconstitutionality of a new statute.
C) hiring and firing government personnel in the name of efficiency and effectiveness.
D) testifying before Congress on the merits or demerits of a proposed regulation or law.
E) None of these answers is correct.