Final answer:
Pain is recognized as a fifth vital sign by many healthcare practitioners due to its subjective nature and importance in patient care.
Explanation:
A. Pain is considered a fifth vital sign by many practitioners. Unlike other vital signs that can be measured objectively, pain is subjective and needs to be reported by the patient as it cannot be clinically confirmed or objectively measured.
Learn more about Pain as a vital sign here:
https://brainly.com/question/39141725
