Correct Answer: B

Rationale: A coloring book with crayons is the best choice as it is safe, engaging, and can provide a distraction during treatment without posing any safety risks. Coloring activities can help keep the child occupied, promote creativity, and offer a calming and therapeutic outlet during chemotherapy sessions.

Correct Answer: C

Rationale: Using a barrier cream like zinc oxide forms a protective layer on the skin, creating a barrier against irritants and moisture, thus helping to prevent diaper rash. Unlike other options, barrier creams do not need to be completely removed at each diaper change, allowing the skin to remain protected between changes.

Correct Answer: A

Rationale: Nasal flaring and grunting are indicative of respiratory distress, suggesting the infant is having difficulty breathing. This finding requires immediate attention as it signifies a more severe respiratory compromise compared to the other symptoms listed.

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.