Which sentence correctly uses an objective case pronoun? a. them invited my brother over to visit. b. give patty and her the prizes. c. mary and me walked to the bus stop. d. will you and him climb mt. mckinley with the lees?

In A, C, and D, the objective case pronouns are being used in the subject. In B, the subject is the person being spoken to, and the objects are "Patty and her," and that's where the pronoun is, so the correct answer is B. So basically, in B, but in none of the others, the objective case pronoun was used in the object.