A 3-day-old full-term baby delivered to a mother with gestational diabetes by C-section developed respiratory distress. The BEST mode for mechanical ventilation is:

Correct Answer: D

Rationale: Pressure-regulated volume control (PRVC) is ideal for neonates with respiratory distress as it adjusts for pressure and volume, providing optimal support while minimizing lung injury.

Correct Answer: B

Rationale: The correct answer is B. The best age to introduce solid foods into an infant's diet is typically between 4 to 6 months. At this age, the infant's digestive system has matured enough to handle more complex nutrients, and they have likely lost the extrusion reflex, making swallowing easier. It is an important transition period for introducing new foods.

Correct Answer: B

Rationale: Anaphylactoid purpura, also known as Henoch-Schönlein purpura, is the most common cause of non-thrombocytopenic purpura in children, causing small vessel vasculitis.

Correct Answer: D

Rationale: Negative symptoms, such as reduced emotional expression and motivation, are more common in childhood-onset schizophrenia.

Correct Answer: B

Rationale: Recycling helps reduce pollution by reusing materials and minimizing waste that would otherwise end up in landfills or oceans.