Concept:Date of packaging: It means the date on which a particular food item is put in a container.it also told that in which it will be sold ultimately. Explanation:Uses of the date of packaging on every packed food item:The date of production or packing on the labels offers information about the product's age.The consumer can determine how old the product is based on this date.The Best Before Date or Use by date, on the other hand, reflects the unopened product's remaining healthy life.Some preservatives are used in the manufacturing and packaging of food.After a certain amount of time, microorganisms develop in it, causing it to deteriorate.Microorganisms can reduce the food nutrient value.The date of packaging also tells us that if a food item is expired should not be consumed.Thus, The date of packaging is mentioned on every packed food item, because:(A) Every food item has their own self-life.-Correct(B) During processing and packaging of food items some preservatives are used.-Correct(C) After certain period some pathogens develop in it to spoil.-Correct(D) We should not consume expired food items.-Correct.So, A, B, C & D options are correct.