Final answer:
The correct form of 'ir' in the sentence is 'Vas'
Step-by-step explanation:
The correct form of 'ir' to complete the sentence is 'Vas'.
So the sentence should be: ¿(tú) a inscribirte en el club de español este semestre? - Vas.
This sentence is in Spanish and the question asks for the correct form of the verb 'ir' in the second person singular (tú form).
Learn more about Spanish verbs