Hello!
Answer:
[tex]\boxed{ \bf C.~them~is~the~pronoun~that~correctly~completes~the~sentence.}[/tex]
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Explanation:
Sentence: When Mary or my uncles leave, have them take my violin home.
As you can see, when you read that sentence, it makes perfect sense. Since they are talking about multiple people (Mary and uncles), we cannot use a pronoun that only applies to one person (so this cancels out option A (him) and B (her).
Now, we're left with options C and D.
Since we're talking about multiple uncles and not just one, the "him" in option D would not work. Therefore, the only option left is C.
