A charge nurse observes a nurse administer intermittent tube feedings via an NG tube to a client. Which of the following actions should prompt the charge nurse to intervene?

The nurse irrigates the NG tube with tap water after feeding.

The nurse administers the feeding through a syringe barrel by gravity.

The nurse allows the client to rest in a supine position during feeding.

The nurse initiates the feeding after aspirating 50 mL of gastric residual.