why is it important to know a persons rhesus factor before a blood transfusion?\na patient who is rh+ can…

why is it important to know a persons rhesus factor before a blood transfusion?\na patient who is rh+ can receive only rh– blood.\na patient who is rh– can receive only rh+ blood.\na patient who is rh+ can receive only rh+ blood.\na patient who is rh– can receive only rh– blood.
Answer
Brief Explanations:
To determine the correct answer, we analyze the Rhesus (Rh) factor in blood transfusions:
- Rh+ patients can receive Rh+ or Rh- blood (so options A and C are incorrect).
- Rh- patients have antibodies against Rh+ blood. If an Rh- patient receives Rh+ blood, their immune system will react. Thus, Rh- patients can only receive Rh- blood (making option D correct and option B incorrect).
Answer:
D. A patient who is Rh– can receive only Rh– blood.