Correct Answer: C

Rationale: Spironolactone, a potassium-sparing diuretic, is the preferred choice in heart failure due to its cardio-protective effect, leading to reduced mortality in patients with heart failure. It is used to manage both hypertension and edema, making it a valuable option in heart failure treatment.

Correct Answer: D

Rationale: Directive adults can inhibit spontaneous play and creativity, which are essential for fostering playfulness in children. When adults are too directive, children may feel constrained and less likely to engage in imaginative and free play. Encouraging independence and allowing children to explore and create their play scenarios can enhance playfulness and creativity.

Correct Answer: C

Rationale: The correct test for an x-ray examination of the bladder and urethra before and during micturition is a voiding cystourethrogram. This procedure allows visualization of the bladder and urethra while the patient is urinating to assess for any abnormalities in the anatomy or function of these structures.

Correct Answer: A

Rationale: Seizures are a significant concern in severe hyponatremia as they indicate potential neurological complications and the need for urgent intervention to prevent further harm to the child. Prompt reporting of seizures allows for timely assessment and appropriate treatment to ensure the child's safety and well-being.

Correct Answer: B

Rationale: The correct answer is to give the medication with orange juice. Orange juice helps increase the absorption of iron from ferrous sulfate. This acidic environment aids in the absorption of iron, making it a suitable choice for administration. Mixing the medication with milk or an antacid may decrease iron absorption, and giving it with meals may not optimize its absorption as effectively as with orange juice.