In a patient with advanced cirrhosis experiencing shortness of breath and an increased respiratory rate due to ascites, what action should the nurse prioritize?

a) Initiate oxygen therapy at 2 L/min to enhance gas exchange.
b) Notify the healthcare provider for a paracentesis procedure.
c) Encourage the patient to cough and breathe deeply to clear secretions.
d) Position the patient in Fowler's position to alleviate diaphragmatic pressure.