Final answer:
The range of normal body temperature is 36-38°C, with the average normal body temperature being typically listed as 37.0°C. Significant deviations from this range can indicate medical conditions such as hypothermia or fever.
Step-by-step explanation:
The range of normal body temperature in degrees Celsius is option b) 36-38°C. While the average normal body temperature is typically given as 37.0°C (98.6°F), the normal range for an adult is actually about 36.5 to 37.5°C (97.7 to 99.5°F). This is the temperature range within which the body functions optimally. Deviation from this range might indicate a physiological condition such as hypothermia if below 35.0°C (95.0°F) and fever or hyperthermia if above 37.5 or 38.3°C (99.5 or 100.9°F).