Which site should be avoided for routine peripheral IV insertion when possible?

Rationale: A. Non-dominant forearm is incorrect because the non-dominant arm is preferred for IV insertion to minimize interference with the patient’s daily activities and reduce the risk of accidental dislodgement. B. Areas of flexion is correct because IVs placed over joints such as the wrist, antecubital fossa, or elbow are prone to mechanical complications. Movement at the joint can cause dislodgement, infiltration, phlebitis, or occlusion of the catheter, making these areas less ideal for routine IV placement. C. Upper extremity veins is incorrect because veins in the upper extremity are the preferred sites for peripheral IV access due to ease of access, visibility, and patient comfort. D. A stable, palpable vein is incorrect because a palpable vein that does not roll and is stable is ideal for IV insertion. Such veins are less likely to infiltrate or dislodge and provide reliable access for infusion.