What is the ideal temperature range for a healthy adult?

The ideal temperature range for a healthy adult is considered to be between 97°F and 100.4°F. This range reflects the body's normal physiological temperature, which can vary slightly among individuals due to factors such as time of day, activity level, and individual metabolic differences.

Body temperature is an important indicator of health, and maintaining it within this range is crucial for ensuring that the body's systems function effectively. A temperature below 97°F may indicate hypothermia, while a temperature above 100.4°F can be a sign of fever, which often indicates infection or illness.

The other options listed fall outside the typical range for a healthy adult. For instance, temperatures below 97°F might not effectively represent a healthy adult's baseline, and temperatures above 100.4°F exceed the typical upper limit of normal and suggest a potential health concern. Thus, the answer B aligns perfectly with established medical guidelines regarding normal body temperature for adults.