Correct Answer: B

Rationale: The priority intervention for a 5-year-old child with leukemia receiving chemotherapy and having a low white blood cell count is to place the child in protective isolation. This intervention helps reduce the risk of infection, which is crucial in this immunocompromised state. Protective isolation aims to limit the child's exposure to pathogens and promote their safety during a period of increased vulnerability to infections.

Correct Answer: A

Rationale: In osteomyelitis, an infection of the bone, patients typically present with localized pain, swelling, and warmth over the affected bone. This is due to the inflammatory response in the bone tissue. Generalized joint stiffness, pain in the muscles, and limited range of motion in the limbs are not specific to osteomyelitis and are more commonly associated with other conditions.

Correct Answer: C

Rationale: Labored breathing is a critical sign of worsening respiratory distress in children with RSV. It indicates that the child's condition may be deteriorating, requiring prompt intervention to ensure adequate oxygenation and prevent respiratory failure. Monitoring for labored breathing allows healthcare providers to promptly assess and manage the child's respiratory status, potentially preventing further complications associated with RSV infection.

Correct Answer: C

Rationale: In clients with bulimia nervosa, electrolyte imbalances are common due to purging behaviors and can lead to severe complications. Monitoring electrolyte levels is essential to detect and manage any imbalances promptly, as they can be life-threatening.

Correct Answer: A

Rationale: Selecting a board game is the best activity for the healthcare professional to plan for these girls as it is age-appropriate and promotes social interaction. Board games can enhance cognitive skills, encourage teamwork, and provide an enjoyable and interactive experience for the girls.