Final answer:
The average normal body temperature of humans is approximately 37.0°C (98.6°F), although individual temperatures can vary slightly. Option 1) 98.6 is the closest answer from the given options, but it may not apply to every individual.
Step-by-step explanation:
The mean temperature of humans is not fixed and can vary slightly depending on the individual. The widely accepted average normal body temperature is typically given as 37.0°C (98.6°F), but it is important to remember that this is an approximate value and can vary from person to person. Some individuals may have a body temperature slightly higher or lower than this average, but it does not necessarily indicate a medical condition.
Therefore, out of the given options, the most accurate answer would be 1) 98.6. However, it is important to note that this is just an average and may not be true for everyone.