Final answer:
The correct interrogative pronoun to use in the sentence is 'which.'
Step-by-step explanation:
The correct interrogative pronoun to use in the sentence is which.
The word 'which' is used when there is a choice between a limited number of options. In this case, the question is asking about a choice among the books, so 'which' is the appropriate pronoun to use. The other options are not suitable in this context.
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