Question

A person with unknown blood group has suffered much blood loss in an accident and needs an immediate blood transfusion. A friend, who has a valid certificate of his blood type, offers to donate blood without thinking twice.
What would have been the type of blood group of the donor friend?

• A. Type A
• B. Type B
• C. Type AB
• D. Type O

Answer 1

The correct option is D Type O

Type O blood is known as the universal donor blood type. They have no antigens on their surface but have all types of antibodies in the plasma (liquid portion of the blood). It is necessary or else the A and B antibodies in the plasma would destroy the person's red cells. Hence, the friend is able to donate his blood.