Question

A person is universal blood donor. What would be his blood group?

• A. Blood group B
• B. Blood group AB
• C. Blood group O
• D. Blood group A

Answer 1

The correct option is C

Blood group O

The person having O blood group is a universal donor. It lacks both antibodies 'a' and 'b' thus do not cause agglutination or clumping of blood cells when transfused into a person with any of the four blood groups. O positive blood can be given to A, B and Ab positive grouped individuals. O negative blood can be donated to individuals with any blood group.