Which fire prevention measure is important in reducing fire risks associated with kitchens?

Cleaning grease buildup regularly is crucial in reducing fire risks associated with kitchens because grease is highly flammable and can ignite easily when exposed to heat. Over time, grease from cooking can accumulate on stovetops, in exhaust hoods, and on other surfaces, creating a significant fire hazard. Regular cleaning helps remove this combustible material, thereby lowering the chances of a grease fire starting and spreading.

In the context of the other options, using plastic utensils might not present a direct fire risk but does not contribute to preventing fires. Shortening cooking times might reduce the time food is exposed to heat, but it does not address the hazardous buildup of grease. Increasing kitchen clutter can, in fact, increase fire risks as more materials may catch fire or obstruct access to fire exits and equipment. Maintaining cleanliness through regular grease removal is the most effective method to enhance kitchen safety against fires.