Final answer:
The best action for Destiny to take to protect her patients is to close all doors to contain the smoke and prevent it from entering patient rooms, as smoke inhalation can be fatal.
Step-by-step explanation:
The best way for Destiny to protect her vulnerable patients from smoke or fire is option 2: Close the doors of each room to keep smoke from seeping in. In scenarios where a fire is present in a building, it is essential to isolate the patients from smoke and flames. If the structure of the building is safe and evacuation isn't immediately required, keeping doors closed can prevent smoke inhalation, which is a major cause of death in fires. Additionally, firefighters often recommend keeping doors closed to slow the spread of fire. Destiny should verify that all doors are solid and capable of blocking smoke and that no flames are threatening the immediate area before relocating patients. Any patients capable of moving independently should be instructed to leave if it is safe to do so, following the hospital's fire evacuation protocol, with assistance provided to those who need it.