A. a protein substance found in the blood of some people
B. a hormone carried by the blood
C. the ratio of red corpuscles to white corpuscles in the blood
D. a process that speeds up the clothing of blood
✅ The correct answer is option A.
The Rh factor refers to a protein substance found in the blood of some people. Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you’re Rh positive. If your blood lacks the protein, you’re Rh negative. Rh positive is the most common blood type.
The Rh factor refers to a protein substance found in the blood of some people. Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you’re Rh positive. If your blood lacks the protein, you’re Rh negative. Rh positive is the most common blood type.