Final answer:
The correct form of 'estar' to complete the sentence is 'estás'
Step-by-step explanation:
The question is asking for the correct forms of the verb estar to complete the sentence. In response to the statement 'Bueno, yo voy a ir', the correct form of 'estar' to use would be 'estás'. Therefore, the complete sentence would be 'Bueno, yo voy a ir. ¿Tú estás en tu apartamento?'
Learn more about Spanish verb conjugation