Final answer:
The appropriate indirect object pronoun to be used in the blank is 'me'.
Step-by-step explanation:
The appropriate indirect object pronoun to be used in the blank is 'me'. The sentence 'Tú traes una chaqueta a mí.' means 'You bring me a jacket.' The indirect object pronoun 'me' is used to indicate that the action of bringing the jacket is done for the benefit of the person, i.e., 'me' in this case.
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