Correct Answer: A

Rationale: By 6 months of age, infants typically achieve the milestone of rolling over completely. This ability demonstrates increasing strength and coordination. Creeping on all fours, pulling self to a standing position, and assuming a sitting position independently are skills that are usually developed at later stages of infancy.

Correct Answer: A

Rationale: In a 10-year-old with newly diagnosed osteomyelitis, the most important information for the nurse to obtain is the recent history of infection recurrences. This is crucial because osteomyelitis is an infection of the bone, and assessing for any recent recurrence of infections can help in determining the possible source of the osteomyelitis and guide the treatment plan accordingly.

Correct Answer: A

Rationale: In a 6-year-old child with asthma experiencing difficulty breathing and using accessory muscles to breathe with a peak flow reading in the red zone, the priority intervention is to administer a nebulized bronchodilator first. Nebulized bronchodilators help open the airways quickly, providing immediate relief and improving breathing. This intervention aims to address the acute respiratory distress the child is experiencing before considering other assessments or interventions such as obtaining arterial blood gases, starting oxygen therapy, or contacting the healthcare provider.

Correct Answer: A

Rationale: During chemotherapy, children may experience nausea. Providing small, frequent meals can help manage nausea as they are easier to tolerate, reducing the likelihood of vomiting. It is important to offer bland, non-spicy foods to avoid exacerbating nausea. Encouraging large meals less frequently or allowing the child to eat whatever they want may overwhelm the digestive system and worsen nausea.

Correct Answer: D

Rationale: When a baby looks for a hidden object, it demonstrates the development of object permanence. This milestone is significant as it signifies the baby's understanding that objects continue to exist even when they are not visible. It is a crucial aspect of cognitive development in infancy.