Final answer:
The verb phrase 'vamos a ir' means 'we are going to go' in English.
Step-by-step explanation:
The correct answer is B. vamos a ir.
The verb phrase 'vamos a ir' means 'we are going to go' in English.
In the sentence, the subject 'nosotros' (we) is performing the action of going on vacation to Peru during the summer.
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