Final answer:
The sentence "¿Estás segura?" translates to "Are you sure?" in English.
Step-by-step explanation:
The correct translation of the sentence "¿Estás segura?" is "Are you sure?". In this sentence, "estás" is the second person singular form of the verb "estar" (to be), and it is combined with "segura" which means "sure" in feminine form.
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