Answer:
Option A
Explanation:
The test which determines the percentage of erythrocytes or red blood cells (RBC's) in the total blood sample of an individual is known as the hematocrit blood test. The measurements for hematocrit test are usually taken by volume. It is a very basic test conducted as per prescription of physician to understand the health of an individual
Anemia results when the results of hematocrit blood test are extremely low.
Hence, option A is correct
