Which is a correct function of cathodic protection?

Cathodic protection is a method used to prevent corrosion on metallic structures, including underground storage tanks. This technique involves the use of an electrochemical process to reduce or eliminate the oxidation reactions that cause corrosion. By implementing cathodic protection, the risk of structural failure due to corrosion is significantly decreased, ultimately extending the lifespan of the tanks and reducing maintenance costs.

The other options do not accurately describe the primary purpose of cathodic protection. Enhancing fuel flow or increasing storage tank capacity is not related to corrosion control. Monitoring tank temperature is also unrelated to the corrosion prevention that cathodic protection provides. The function of cathodic protection is specifically focused on safeguarding against corrosion, making the option related to corrosion reduction the correct one.