Final answer:
Water is not the best agent for Class C fires due to the risk of electrocution. Non-conductive agents like carbon dioxide, dry chemicals, or fluorinated foams are preferred.
Step-by-step explanation:
The answer to whether water is the best extinguishing agent to put out a Class C fire is B. False. Class C fires involve electrical equipment, and using water can be dangerous due to water's connectivity, which may lead to electrocution. Instead, non-conductive extinguishing agents such as carbon dioxide, dry chemical extinguishers, or a fluorinated solution are recommended. A fluorinated solution, or firefighting foam, is able to spread across the burning surface and effectively extinguish the fire without conducting electricity. Such foams are universally used to fight large-scale fires, particularly those involving organic liquids.