For females, what is the normal range of red blood cells?

The normal range of red blood cells for females is typically recognized as being between 4.2 to 5.4 million cells per cubic millimeter (mm^3). This range reflects the physiological differences in red blood cell production and concentration in women compared to men, who generally have higher normal ranges.

The significance of this range lies in its role in assessing a person's overall health and diagnosing potential conditions such as anemia or polycythemia. A deviation from this range can indicate various health issues, making it essential for healthcare providers to monitor red blood cell counts.

In context, the other ranges presented do not align with the established norms for females. Other choices present values that are either too high or too low based on established medical standards, thus serving different populations or conditions rather than the typical female adult population.