The Temperature Danger Zone in Celsius is which range?

• A. -5°C to 20°C
• B. 5°C to 57°C
• C. 0°C to 40°C
• D. 10°C to 60°C

Answer: (B)

The Temperature Danger Zone is the range of temperatures where bacteria can grow rapidly on perishable foods. In Celsius, that range is 5°C to 57°C (which corresponds to 41°F to 135°F). Foods should be kept at or below 5°C to slow or stop growth, or at or above 57°C to inhibit bacteria. The given range matches this standard TDZ. Other options miss part of the danger zone: starting below 5°C includes temperatures that aren’t the official TDZ, ending at 40°C or 60°C either cuts off some of the dangerous temperatures (41–57°C) or extends beyond the recommended upper limit.