Final answer:
The U.S. Fish and Wildlife Service's use of congressionally appropriated funds to maintain wildlife refuges is an example of bureaucratic implementation of law.
Step-by-step explanation:
The action of the United States Fish and Wildlife Service spending money appropriated by Congress to maintain wildlife refuges is an example of bureaucratic implementation of law. This demonstrates how the bureaucracy translates the intent of Congress into practical actions, such as preserving natural habitats for wildlife. In this case, Congress uses its budgetary authority as a way to ensure agencies carry out legislative priorities, a clear display of the legislative branch working in connection with the bureaucratic mechanisms of the executive branch to realize the enactment of environmental protection laws, like the Endangered Species Act.