Answer:
Food worker makes sandwiches using tuna salad prepared yesterday, he should label the food with a use by date of 7 days.
Therefore the correct answer is Option B.
Step-by-step explanation:
Some foods are categorized as perishable foods. The perishable foods are defined as the foods which gets spoiled within few days. Also so there are some types of food which do not get spoiled for many days. This happens because of the presence of chemicals in the food.
The chemical which is present is responsible for the oxidation and reduction reaction. This chemical reaction spoils the food and it is not fit for eating. Every packed food has a date mentioned. That food must be consumed before that date to avoid any infection or disease to the person who eats it.