Final answer:
AB+ is the most versatile and valuable blood type for a blood bank as it can receive blood from any other blood type without an adverse reaction. AB- is a rare blood type that lacks the Rh factor. O+ is the universal donor, and O- is the universal donor but can only receive O- blood.
Step-by-step explanation:
The most versatile and valuable blood type for a blood bank is AB+. This blood type is considered the universal recipient because it can receive blood from any other blood type without experiencing an adverse reaction. AB+ contains both A and B antigens on the surface of red blood cells, as well as the Rh factor, making it compatible with all other blood types.
In contrast, AB- is a rare blood type that does not have the Rh factor, which limits its compatibility. O+ is considered the universal donor because it can be transfused to recipients of any blood type, but it can only receive O+ or O- blood in return. O- is the universal donor as it can donate blood to any other blood type, but it can only receive O- blood in return.
Learn more about importance of AB+ blood type in a blood bank