Final answer:
The manager should instruct the food worker to wash his hands before putting on the clean gloves to prevent contamination.
Step-by-step explanation:
The manager should instruct the food worker to wash his hands before putting on the clean gloves. This is because removing gloves and handling trash can potentially contaminate hands with harmful bacteria or viruses. By washing hands before putting on the clean gloves, the worker can ensure that his hands are clean and reduce the risk of contaminating the gloves and food.
Learn more about food worker hygiene