Question

1. gloves should be changed:

every two hours
after handling raw foods
only when they rip
never

Explanation:

Gloves should be changed after handling raw foods to prevent cross - contamination. Changing every two hours is not a standard rule. Gloves should be changed even if they don't rip (e.g., after handling different types of food). And never changing gloves is a bad practice.

Answer:

After handling raw foods