Respuesta :
In which sentence are all pronouns used as objects of a preposition used correctly?
C. Tracey pushed the cart between I and Dad.
The object of a preposition can be a noun or pronoun.  In sentence C, between  would be the preposition, and I and Dad would  be the object of the preposition. The remaining sentences are not examples of pronouns used as objects of preposition. Sentences A and B use the objective cases incorrectly, it should be: them instead of they, and her instead of she. Sentence C uses between you and me  as subject and not as object of preposition. Â
D. Between you and me, we can move this old sofa. This is the sentence in which all the pronouns are used as objects of a preposition. See the underlined structure and the categories below:
Between: preposition
you: objective pronoun
me: objective pronoun