Final answer:
The correct statement regarding fryer safety is that water should never be used to extinguish a grease fire in the fryer, as it can worsen the fire.
Step-by-step explanation:
The statement that correctly describes caution that should be used with fryers is: E) Water should never be used to extinguish a grease fire in the fryer. Using water on a grease fire can cause the fire to spread and become more dangerous because the water can scatter the burning oil. It is also important to never leave the fryer unattended as it can lead to fires or spills.
Frozen items should be added with care to avoid oil splatter and temperature shocks which can also be hazardous. Overfilling the fryer basket can cause oil to overflow when the food is added, leading to a potential fire risk, while checking and adjusting the oil level regularly can prevent dangerous spills and maintain proper frying conditions.