Final answer:
The correct word to complete the sentence is 'la biblioteca'. It means 'library' in Spanish and is the most appropriate option for studying.
Step-by-step explanation:
The correct word to complete the sentence 'Va a estudiar ella en ______ hoy?' is 'la biblioteca'. The word 'biblioteca' in Spanish means 'library'. So, the sentence translates to 'Is she going to study at the library today?'. In this context, 'biblioteca' is the most appropriate option as it is a place where one would typically go to study.
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