Final answer:
The correct pronoun for the sentence is 'her,' which is an objective pronoun.
Step-by-step explanation:
In the sentence, 'My dad met his boss and (she, her) for the meeting,' the correct pronoun is her and it functions as the object of the preposition 'for.' It is an objective pronoun because it receives the action of the verb 'met.' If we replace 'her' with the subjective pronoun 'she,' the sentence would be incorrect.
Learn more about Grammar and pronouns