A nurse is preparing to insert an IV catheter for a client. Which of the following actions should the nurse plan to take?

A. Elevating the arm may reduce blood flow and make vein access more difficult. B. The tourniquet should be applied above the venipuncture site, not below, to engorge the veins. C. The dominant arm may be more difficult to access due to muscle use; the non-dominant arm is often easier for vein insertion. D. Selecting a vein that is palpable and straight provides the best chance for successful and comfortable catheter insertion.