Question

1. after sanitizing dishes in a 3 compartment sink, you should

let them air dry.
dry them with a dish towel.
run them through the dishwasher.
immediately put food on them.

Explanation:

After sanitizing dishes, air drying is the recommended practice to avoid recontamination from dish towels (which can harbor bacteria) or skipping the drying step. Running them through a dishwasher is redundant after using a 3-compartment sink, and putting food on wet sanitized dishes is unsafe.

Answer:

Let them air dry.