If you've already received your drinks what is a waiter likely going to do next?
Options:
- set table
- present bill
- wears black
- serve food
- talk
Let's think carefully first. Step-by-step reasoning process:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Food is to be served by a waiter. If you've already received your drinks then a waiter is likely to serve food. So the final answer is serve food.