Question

functional reference ranges:
fall within the 95% normal range
orient around change in pathology
are based on a sick population
focus on patients’ physiology

Explanation:

To determine the correct answer about functional reference ranges:

• "Fall within the 95% normal range" is typical of standard (not functional) reference ranges based on healthy populations.
• "Orient around change in pathology" is not the focus of functional reference ranges, which are more about individual physiology.
• "Are based on a sick population" is incorrect as functional reference ranges are not based on sick populations.
• Functional reference ranges focus on an individual's physiology, considering how their body functions (e.g., metabolic or physiological processes) rather than just population - based norms. So the correct option is the one stating "Focus on patients’ physiology".

Answer:

The correct option is: $\boldsymbol{\text{Focus on patients' physiology}}$ (the option with this text, along with its corresponding radio button selection).