Final answer:
The correct nursing action for ensuring a patient's basic need for clean air is administering oxygen therapy. This task is conducted under the direct supervision of a registered nurse and is crucial for patients requiring respiratory support.
Step-by-step explanation:
The nursing action related to ensuring a patient's basic need for clean air is A) Administering oxygen therapy. This type of care falls under the direct supervision of a registered nurse, who may also focus on providing dialysis treatments. Oxygen therapy ensures that patients with compromised lung function or other conditions affecting their ability to breathe receive the necessary amount of oxygen. Nurses are responsible for assessing and responding to a patient's respiratory needs, and may include tasks such as monitoring oxygen saturation levels, adjusting oxygen flow rates, and ensuring that the oxygen delivery equipment is working properly.