Which reading on a thermometer indicates a normal body temperature?

A normal body temperature for a healthy adult is typically considered to be around 98.6°F, which can vary slightly among individuals, with a range generally accepted between 97°F and 100.4°F.

The reading of 99.6°F falls within this healthy range, therefore it indicates a normal body temperature for most people. It is common for body temperature to fluctuate throughout the day, influenced by factors such as activity level, time of day, and individual physiology.

In contrast, the other choices present temperatures that may be higher than the normal range; for instance, 100.4°F is often categorized as a low-grade fever, while 101.0°F is considered a fever, suggesting an infection or other medical condition. The reading of 98.2°F, while on the lower end, is still within the acceptable range, but not as directly indicative of a common normal body temperature as 99.6°F is.