Question

if a person has type b blood, which statement describes the antibodies present in his or her blood?
only anti-a antibodies are present.
only anti-b antibodies are present.
both anti-a and anti-b antibodies are present.
neither anti-a nor anti-b antibodies are present.

Explanation:

Blood type B has B antigens on red blood cells. The body produces antibodies against antigens it doesn't have. Since type B doesn't have A antigens, it has anti - A antibodies. It doesn't have anti - B as that would attack its own B antigens.

Answer:

Only anti - A antibodies are present.