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 most directly treat this finding?

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