Question : Which blood group is the universal donor?
Option 1: O+
Option 2: O-
Option 3: AB-
Option 4: AB+
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Correct Answer: O-
Solution : The correct option is O-.
Blood type O negative (O-) is known as the "universal donor" because people with this blood type can donate blood to people with any ABO or Rh blood type without experiencing a severe immunological reaction. Because O- blood lacks antigens A, B, and Rh, it is less likely to produce unfavourable reactions in recipients.
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Question : Blood group AB has
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