Question

what blood type must a person have to be a universal recipient?
ab positive
o negative
ab negative
o positive
aa positive

Explanation:

Universal recipients can receive blood from all types because they have both A and B antigens on red blood cells (so no anti-A/anti-B antibodies) and the Rh factor (no anti-Rh antibodies). AB positive meets these criteria. O negative is the universal donor, not recipient. AB negative lacks Rh factor, limiting Rh-positive blood receipt. O positive and AA positive are not universal recipients.

Answer:

AB positive