Final answer:
The subject in the given question is 'YO'. When you conjugate the verb 'go' (ir) to the subject 'YO' in Spanish, the spelling changes to 'voy'.
Step-by-step explanation:
The subject in the given question is YO. When you conjugate the verb 'go' (ir) to the subject 'YO' in Spanish, the spelling changes to 'voy'.
Learn more about Spanish verb conjugation