If Mrs. Brown has type B blood and Mr. Brown has type A and B blood, based on the results of the punnet square, which blood type is one of Mr. and Mrs. Brown’s offspring most likely to have?

Mr Brown's blood type is AB and Mrs. Brown's Blood type is BO.
Based on the results of the punnet square, the possible blood types of Mr. and Mrs. Brown's offspring are the following: AB, BB, AO, and BO.