The Nurse Notes Thick,white Secretions in the Endotracheal Tube (ET)of

The nurse notes thick,white secretions in the endotracheal tube (ET) of a patient who is receiving mechanical ventilation.Which intervention will be most effective in addressing this problem?

A) Increase suctioning to every hour.
B) Reposition the patient every 1 to 2 hours.
C) Add additional water to the patient's enteral feedings.
D) Instill 5 mL of sterile saline into the ET before suctioning.