Which of the following blood type genotypes result in the same phenotype? a) i^a i^a and i^a i^b b) i^b i^b and i^b i c) i^b i^b and i^a i^b d)i^b i and ii i know what phenotype and genotype mean, but i have nooo idea what those letters

The letter I is just there. Blood type problems will usually have

and  = blood type A
and  = blood type B
 would be blood type AB
would be blood type O.

So the answer would be B since B is the only option that the offspring would be only blood type B, which is the same as their parents.