What is suggested as a potential benefit of using sacrificial anodes?

The use of sacrificial anodes is primarily beneficial for preventing corrosion effectively. Sacrificial anodes are made of a more reactive metal that corrodes instead of the metal structure they are protecting, such as an underground storage tank. When the anodes are electrically connected to the tank, they corrode in place of the tank, extending the life of the tank by reducing the rate of corrosion that the tank itself experiences. This cathodic protection method is crucial in environments where moisture and electrolytes are present, as these conditions can accelerate corrosion processes.

The other choices do not accurately represent the role of sacrificial anodes. Increased tank height, a constant power supply, and measuring soil moisture are not relevant to the protective function that sacrificial anodes provide in corrosion prevention. Thus, their main benefit lies in their effectiveness in protecting against corrosion, helping maintain the integrity and safety of underground storage tanks.