炼焦的加热速度越快，煤的膨胀压力越小。（）

A preschool-age child with sickle cell anemia is admitted to the health care facility in vaso-occlusive crisis after developing a fever and joint pain. What is the nurse's highest priority when caring for this child

A．Providing fluids.

B．Maintaining protective isolation.

C．Applying cool compresses to affected joints.

D．Administering antipyretics, as prescribed.