Which action by the patient with newly diagnosed Raynaud's phenomenon best demonstrates that the nurse's teaching about managing the condition has been effective?

Rationale: A. The patient takes pseudoephedrine (Sudafed) for cold symptoms: Pseudoephedrine is a vasoconstrictor and can worsen vasospasms in clients with Raynaud’s phenomenon. Its use increases the risk of triggering attacks and should be avoided in this condition. B. The patient exercises indoors during the winter months: Exercising indoors during cold weather helps minimize exposure to low temperatures, which are a common trigger for vasospastic episodes. This action shows that the patient understands how to reduce environmental risk factors that exacerbate Raynaud’s phenomenon. C. The patient immerses hands in hot water when they turn pale: Immersing hands in very hot water may cause burns or skin damage due to impaired circulation and altered sensation. Warming hands gradually with warm (not hot) water or using gloves is the safer approach. D. The patient avoids taking nonsteroidal antiinflammatory drugs (NSAID): NSAIDs are not contraindicated in Raynaud’s phenomenon and are sometimes used to manage associated pain or inflammation. Avoiding them does not demonstrate effective disease management.