Final answer:
The correct answer is A - sirvió. The waiter served the dessert first and then the main dish.
Step-by-step explanation:
The correct answer is A. sirvió.
The sentence translates to: The waiter was very bad. He served the dessert first and then the main dish.
The verb 'sirvió' means 'served' in English. In this case, the waiter served the dessert before the main dish, which is considered bad service.
Learn more about Spanish Verbs