A nurse is discharging a child who has sickle cell anemia after an acute crisis episode. Which of the following instructions should the nurse include in the teaching?

A. While monitoring for fever is important because infection can precipitate a sickle cell crisis, daily temperature checks are not routinely necessary unless the child is symptomatic. B. Limiting activity is not recommended; children should remain as active as tolerated, as regular activity helps circulation and overall health. C. Adequate hydration is essential in preventing sickling episodes. Fluids help decrease blood viscosity, improve circulation, and reduce the risk of vaso-occlusive crises. Parents should encourage frequent oral fluid intake. D. Cold can trigger vasoconstriction, which may worsen sickling and pain. Warm compresses are preferred to relieve pain safely.