Answer:
2. Promoting frequent turning and deep breathing to mobilize secretions
Step-by-step explanation:
Based on the information provided within the question it can be said that the best nursing action to prevent pulmonary complications would be promoting frequent turning and deep breathing to mobilize secretions. This is because after a Gastrectomy (which the doctors remove the cancerous part of the stomach) pulmonary function decreases because there is a reduction in diaphragmatic activity and microatelectasis.