Answer :
Final answer:
A Class K fire extinguisher should be used to extinguish a deep-fryer fire after the power has been turned off.
Explanation:
The class of fire extinguisher that should be used to extinguish a deep-fryer fire after the power has been turned off is a Class K fire extinguisher. Class K fire extinguishers are specifically designed to extinguish fires involving cooking oils and fats, such as deep-fryer fires.
These fire extinguishers use a special extinguishing agent, typically a potassium-based solution, which reacts with the oil or fat to form a soapy foam that suppresses the fire.
It is important to use a Class K fire extinguisher in this scenario because other types of fire extinguishers, such as Class A or B, may not be effective in extinguishing deep-fryer fires and could even make the situation worse.
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