Final answer:
To reduce leg pain in a client with peripheral arterial insufficiency, the nurse should have the client lower the legs to a dependent position to improve blood flow.
Step-by-step explanation:
A nurse caring for a client with peripheral arterial insufficiency of the lower extremities should focus on interventions that increase blood flow to the affected areas. To reduce leg pain associated with this condition, the nurse should advise the client to lower the legs to a dependent position, thereby assisting with blood flow. This advice is reflected in option D) Lower the legs to a dependent position. Elevating the legs or applying cold compresses may reduce venous return and potentially exacerbate pain.
Furthermore, increasing the ingestion of caffeine products is not advisable as it could potentially lead to additional vasoconstriction.