If the father is heterogeneous, there is a 50% probability for a blood type A child and a 50% probability for a blood type O child. If the father is homologous, every offspring will be blood type A.
Answer : the probability they will have a baby with type A blood is 25% as you can see on the punnet square there is one square that has the A and the recessive o type so since A is dominant that will be the phenotype of the baby.
