a person whose blood group is B required blood transfusion name the possible blood groups of the donors

if he is B negative :  he can only receive blood from other B negative donors or from type O negative donors

and if he is B positive : B positive patients can receive blood from B positive, B negative, O positive and O negative donors.  

Explanation:

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.