Hartman's Nursing Assistant Care Practice Exam 2025 - Free Nursing Assistant Care Practice Questions and Study Guide

A fever is defined as an increase in body temperature, typically recognized as a temperature exceeding 100.4°F (38°C). This elevated temperature often indicates that the body is fighting an infection or illness, as the immune system responds to these challenges by raising the body's temperature in an attempt to create an environment that is less favorable for pathogens.

The other choices do not indicate a fever. A body temperature below 98.6°F suggests that the person is likely in the normal range or possibly experiencing hypothermia. A pulse rate over 100 beats per minute is an indication of tachycardia, which can be a response to various factors but does not specifically indicate a fever. Lastly, a blood pressure reading of 120/80 mmHg falls within the normal range and does not reflect any elevation in body temperature. Therefore, the only option that correctly signifies a fever is the one describing an elevated body temperature exceeding 100.4°F (38°C).