Q: 152 (SSC/NA)
question_subject:
Science
question_exam:
SSC
stats:
0,10,4,2,1,10,1
keywords:
{'universal donors': [1, 0, 0, 0], 'blood group': [2, 2, 0, 1], 'people': [11, 3, 3, 7], 'ab': [0, 0, 1, 0]}
The correct answer is option 3: O. The blood group O is considered the universal donor because individuals with this blood group can donate blood to individuals of any other blood group (A, B, AB, or O) without the risk of a transfusion reaction. This is because type O blood does not contain A or B antigens on the surface of red blood cells.
Option 1: A blood group has A antigens on the surface of red blood cells, so it is not a universal donor.
Option 2: B blood group has B antigens on the surface of red blood cells, so it is not a universal donor.
Option 4: AB blood group has both A and B antigens on the surface of red blood cells, so it is not a universal donor either.
Hence, the correct answer is option 3: O.