Which situation is an imminent health hazard that would require the operation to consider ceasing operations?

解析

A fire that disables essential equipment or damages the facility is an imminent health hazard, because it can compromise safe food handling and the safety of the premises; the manager must stop affected operations and notify the regulatory authority. The other three are routine operating problems the Food Code handles through ordinary correction: a single dead bulb in a lit storeroom is a maintenance item, a short-staffed floor is a scheduling problem rather than a food safety hazard, and a late delivery accepted at the correct temperature has not put the food at risk.