What is a vital sign that CNAs must regularly check?

A vital sign is a measurement of essential body functions that provide critical information about a person's health status. Among the choices presented, temperature is a fundamental vital sign because it helps assess whether a patient has a fever, an infection, or other health issues. Monitoring temperature can indicate significant changes in a patient's condition, which is crucial for timely intervention and care.

The other options, while relevant to patient care, do not fall under the category of vital signs. Mood, favorite activities, and dietary preferences are important for holistic care and understanding the patient's overall well-being but do not directly reflect physiological status like vital signs do. Regularly checking temperature allows CNAs to contribute effectively to patient monitoring and support the healthcare team's efforts to maintain or improve health outcomes.