Final answer:
The correct form of the verb comer for the subject pronoun usted is come.
Step-by-step explanation:
The correct form of the verb comer for the subject pronoun usted is come.
For example, if you want to say 'You eat rice,' in Spanish you would say 'Usted come arroz.'
In this sentence, 'come' is used because it is the conjugation of comer that matches with the subject pronoun usted.
Learn more about Conjugation of the verb comer