Correct Answer: D

Rationale: Flaring of the nares is a clinical sign of acute respiratory distress in infants. It indicates an increased effort to breathe and is a crucial finding that requires immediate attention, as it signifies the child is having difficulty breathing and may be in respiratory distress.

Correct Answer: B

Rationale: Bracing is commonly used in moderate cases of scoliosis to prevent progression of the spinal curvature.

Correct Answer: B

Rationale: In pediatric patients, digoxin administration is guided by the heart rate. If the child's heart rate is below the established threshold, which is typically 90-100 beats per minute in a 4-year-old, the medication should be withheld, and the healthcare provider should be notified for further evaluation and instructions.

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: DTaP and IPV can be safely administered to a child with a mild illness like a cold, even if there is an immunocompromised family member, as these vaccines do not contain live viruses. It is important to ensure that the child is otherwise healthy and afebrile before administering the vaccines. The presence of a cold is not a contraindication for receiving DTaP and IPV vaccines.