Which Blood Type is Called the Universal Donor

Question

Which blood type is called the universal donor?
A) B
B) Type AB
C) Type O
D) Type A

Accepted Answer

Type O blood is considered the universal donor because it lacks the A and B antigens on the surface of the red blood cells. This means that Type O blood can be safely transfused into patients with any blood type, as the recipient's immune system won't see the transfused blood as foreign and attack it.