Final answer:
The correct ratio and volume of white blood cells (WBCs) are provided in Option A. Neutrophils typically make up 50-70% of the WBC count, and other types like lymphocytes, monocytes, eosinophils, and basophils have their own specific percentage ranges within the leukocyte population.
Step-by-step explanation:
The ranges for the ratio and volume of white blood cells (WBCs) vary by type. For neutrophils, the normal range is 50-70% of the total leukocyte count. Lymphocytes typically make up 20-40%, monocytes 2-8%, eosinophils 2-4%, and basophils around 0.5-1% of the total white blood cell count. Given these normal ranges, the correct answer to the student's question about the ratio and volume of WBCs is Option A, which states:
- Neutrophils: 40-60%
- Lymphocytes: 20-40%
- Monocytes: 2-8%
- Eosinophils: 1-4%
- Basophils: 0.5-1%
It should be noted that these percentages are approximations and can vary across age, gender, and individual health conditions.