Final answer:
The correct verb to complete the sentence is "sé".
Step-by-step explanation:
The correct verb to complete the sentence "Yo ______ donde vive" is sé. This is because the verb "sé" means "I know" and it matches the subject "Yo" which means "I". The verb "conozco" means "I know (someone)" and it is not appropriate for completing this sentence.
Learn more about Spanish verbs