Final answer:
The nurse should identify statement A) 'I should elevate my legs when sitting for long periods' as an indication that the client understands teaching about self-care for venous insufficiency. Elevating the legs helps improve blood flow and alleviate symptoms of venous insufficiency.
Step-by-step explanation:
The nurse should identify statement A) "I should elevate my legs when sitting for long periods" as an indication that the client understands teaching about self-care for venous insufficiency. Elevating the legs when sitting for long periods helps to improve blood flow by allowing gravity to assist in the return of blood from the legs back to the heart. This can help alleviate symptoms of venous insufficiency, such as swelling and discomfort.