Final answer:
The correct option is a. Disinfect and barrier wrap the chair prior to seating them. This helps to prevent the spread of pathogens and maintain a clean and safe environment.
Step-by-step explanation:
The correct option is a. Disinfect and barrier wrap the chair prior to seating them. When a patient arrives for a checkup and cleaning, it is important to ensure proper infection control measures. Disinfecting and barrier wrapping the chair before seating the patient helps to prevent the spread of pathogens and maintain a clean and safe environment. This precautionary step minimizes the risk of infection transmission.