Final answer:
Food safety is the biggest concern at the purchasing, receiving, and storing stage of the flow of food.
Step-by-step explanation:
Food safety is of the biggest concern at the purchasing, receiving, and storing stage of the flow of food. This is because any contamination or mishandling of the food during these stages can lead to the growth of harmful bacteria and foodborne illnesses.
For example, if food is purchased from unreliable sources or stored at incorrect temperatures, it can become contaminated and cause food poisoning when consumed.
Therefore, it is essential to ensure proper hygiene and temperature control during purchasing, receiving, and storing to maintain food safety.