Final answer:
The cold chain in the grocery store refers to the proper temperature control of perishable items, achieved through the use of refrigerators and freezers, to prevent bacterial growth and spoilage.
Step-by-step explanation:
The "cold chain" in the grocery store refers to the maintenance of the proper temperature for food storage and transportation. It involves keeping perishable items, such as meat, dairy, and produce, at temperatures that prevent bacterial growth and spoilage. This is achieved through the use of refrigerators and freezers throughout the store, ensuring that the food remains fresh and safe for consumption.