In case of food service operation, the mangers need to take an extra care to maintain the hygienic structures, for this, they must be aware of all the conditions going on in the operation.
In case, a food service operation experiences the back flow of the sewage, the operation should be immediately stopped. Sewage water is very unhealthy and the bacteria in the sewage water can cause many types of illness, which can contaminate food.
So, it is very important that all the operations should be stopped immediately, till the sewage back flow is not cured and the area is thoroughly cleaned.
hence, the correct answer is Close the operation.
