Answer:
Based on the obtained pH of 4 and 50 mL of gastric aspirate, the nurse should take the following action:
b) Hold the feeding and notify the healthcare provider.
The pH of 4 and the presence of gastric aspirate indicate that the tube is in the stomach, but the pH is lower than the recommended value for safe feeding, which is less than 5.5 . Therefore, the feeding should be held, and the healthcare provider should be notified for further guidance.
Explanation: