Correct Answer: C

Rationale: After the baby's head delivers, it is typically tilted posteriorly to one side to help facilitate the delivery of the shoulders. This positioning is important for the safe and smooth delivery of the baby.

Correct Answer: C

Rationale: Nausea and vomiting are more common in children than adults following an isolated head injury. Children often present with gastrointestinal symptoms like nausea and vomiting after a head injury due to differences in physiological responses compared to adults.

Correct Answer: D

Rationale: In two-rescuer child CPR, the correct compression depth is one third the diameter of the chest. This depth can be achieved by compressing the chest with one or two hands. It is crucial to follow the correct compression depth guideline to ensure effective chest compressions and circulation during CPR for a child.

Correct Answer: B

Rationale: The most appropriate position for a mother in labor with a prolapsed umbilical cord is supine with hips elevated. This position helps reduce pressure on the cord, preventing further complications and ensuring optimal blood flow to the fetus.

Correct Answer: A

Rationale: The most effective way to prevent cardiopulmonary arrest in a newborn is to ensure effective oxygenation and ventilation. This is crucial in maintaining adequate oxygen supply and preventing respiratory distress or failure, which are significant factors leading to cardiopulmonary arrest. Providing appropriate ventilation support and oxygenation can help sustain the newborn's vital functions and reduce the risk of cardiopulmonary compromise.