Concept:Blood group AB is the universal recipient because it has no anti-A or anti-B antibodies.
Explanation:A person can receive blood from a donor type that their plasma will not attack.
Group O blood has anti-A and anti-B antibodies, so it cannot receive from A, B, or AB.
Group A has anti-B antibodies, so it cannot receive B or AB blood.
Group B has anti-A antibodies, so it cannot receive A or AB blood.
Group AB has neither anti-A nor anti-B antibodies, so it can receive blood from all groups: O, A, B, and AB.
Answer:B. AB