Correct option is B
Sol. The normal human body temperature is considered to be 98.6 degrees Fahrenheit, which is equivalent to 37 degrees Celsius. This temperature was first established in the 19th century by German physician Carl Wunderlich. However, modern research shows that body temperature may slightly vary (from 97.7°F to 99.5°F), depending on the individual, time of day, and method of measurement. 98.6°F remains the medically accepted average for a healthy adult at rest.
Explanation of each option:
· (a) 98.2 – Incorrect. While 98.2°F may fall within the acceptable range of normal body temperature, it is not considered the standard average.
· (b) 98.6 – Correct. This is the widely recognized normal average body temperature for a healthy adult. It serves as a clinical reference point in healthcare.
· (c) 99.2 – Incorrect. This temperature may indicate a slight elevation or fever depending on symptoms, though not dangerously high. It’s above the typical average.
· (d) 99.6 – Incorrect. A body temperature of 99.6°F is slightly higher than average and may suggest early-stage fever if persistent with other symptoms.