Final answer:
The word 'grande' best completes the conversation.
Step-by-step explanation:
The correct word that completes the conversation is grande. Francisco says, 'Mi auto tiene mucho espacio' which means 'My car has a lot of space.' Emily agrees and responds with 'Sí. Tu auto es muy' which means 'Yes, your car is very...' The most appropriate word to complete the sentence would be 'grande' which means 'big' in English.
Learn more about Completing a conversation in Spanish