Final answer:
The best question to complete the conversation between Milta and Andrés is "¿Cuándo es la fecha del examen?"
Step-by-step explanation:
The question asks which question best completes the conversation between Milta and Andrés. Based on the information given, Andrés states that "La fecha del examen es el trece de octubre," which translates to "The date of the exam is the thirteenth of October." The best question to complete the conversation would be "¿Cuándo es la fecha del examen?"
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