After receiving change of shift report, the nurse prepares to administer morning medications. Which medication should the nurse administer first?

Stimulant laxative to a patient who has not had a bowel movement in 3 days.

Intravenous (IV) proton-pump inhibitor medication to a patient who is nothing by mouth (NPO).

Rapid acting insulin to a patient who has breakfast tray in the room.

Loop diuretic to a patient with a potassium (K+) level of 3.2 mEq/L.