An unlicensed assistive personnel (UAP) is assisting with the care of a client with a peripherally inserted central venous catheter (PICC). Which guidance should the practical nurse (PN) provide to the UAP?

Be sure to keep the head of the client's bed elevated.

Change the dressing over the catheter insertion site.

Feed the client all meals to reduce arm movement.

Use the opposite arm for blood pressure measurement.