The licensed practical nurse (LPN) is assisting a primary health care provider in inserting an intravenous catheter into a patient with dehydration. Which intervention would help in preventing vein damage in the patient?

A. Palpate the vein by pressing downward.
B. Clean the site of insertion with an alcohol swab.
C. Never leave the tourniquet on for longer than 1 minute
D. Open and close the wrist during the insertion of the needle