Final answer:
Using coated or shatter-resistant light bulbs helps prevent physical contamination.
Step-by-step explanation:
Using coated or shatter-resistant light bulbs is a way of preventing physical contamination. Coated or shatter-resistant light bulbs are designed to prevent the release of glass fragments if the bulb accidentally breaks. This helps to avoid physical contamination from broken glass and ensures the safety of individuals who may come into contact with the broken bulb.