Discard soiled isolation gown after leaving the client’s room — This is correct because gowns and other PPE must be removed before exiting to prevent spreading infectious organisms outside the isolation room.

Assign the client to a negative-pressure airflow room — This is correct because tuberculosis (TB) requires airborne precautions, and negative-pressure rooms prevent airborne droplet nuclei from circulating to other areas.

Wear an N9S mask when caring for the client — This is incorrect because the correct mask for TB is a fit-tested N95 respirator, not “N9S.”

Perform hand hygiene before leaving the client’s room — This is correct because hand hygiene is essential for infection control and must be performed after all patient contact and PPE removal.

Place a trash can for soiled linens inside the client’s room — This is incorrect because soiled linens should be placed in designated bags, not trash cans, to prevent contamination.