Which sentence contains a pronoun without a clear antecedent?

In choice C, “they” has no clear antecedent because the sentence does not say who will hand out the packets. In A, “they” refers to Kara and Maddie; in B, “he” refers to Troy; and in D, “themselves” refers to Diego and Liza. Therefore, C contains a pronoun without a clear antecedent.

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