The temperature for receiving cold TCS (Time/Temperature Control for Safety) foods must be:
TCS (Time/Temperature Control for Safety) foods are items that require strict temperature controls to prevent the growth of pathogens. According to the FDA Food Code, the general requirement for receiving cold TCS foods is that they must be at or below \(41^{\circ}\text{F}\) (\(5^{\circ}\text{C}\)). However, certain specific items, such as shellfish, eggs, and milk, may be accepted at temperatures up to \(45^{\circ}\text{F}\) (\(7^{\circ}\text{C}\)) under specific regulatory conditions. Among the choices provided, \(45^{\circ}\text{F}\) is the most standard threshold used in various food safety certification programs when \(41^{\circ}\text{F}\) is not explicitly listed as the primary threshold. Options \(71^{\circ}\text{F}\) and \(135^{\circ}\text{F}\) are not appropriate for cold TCS food. Therefore, \(45^{\circ}\text{F}\) is the standard receiving threshold among the given options for ensuring food safety standards are met for these products.
Based on the analysis of food safety regulations, the requirement for receiving cold TCS foods is to ensure they are within the cold temperature range to inhibit bacterial growth. While the current FDA standard is generally \(41^{\circ}\text{F}\) or lower, \(45^{\circ}\text{F}\) or lower is the correct option among the provided choices. Thus, we select option b.
In a restaurant setting, when a delivery truck arrives with a shipment of fresh produce or refrigerated goods, a food manager must use a calibrated thermometer to check the internal temperature of the cold TCS foods immediately upon receipt. If the delivery is at or below the established safety standard of \(45^{\circ}\text{F}\) (or \(41^{\circ}\text{F}\) in stricter systems), it can be accepted and moved directly to the walk-in refrigerator. This practice ensures that no food items spent too much time in the "danger zone," where pathogens multiply rapidly, thereby keeping customers safe from foodborne illnesses.