Correct Answer: B

Rationale: Cimetidine binds to androgen receptors, producing receptor blockade, which can cause enlarged breast tissue, reduced libido, and impotence. All these effects reverse when dosing stops. Amoxicillin, metronidazole, and omeprazole are not associated with gynecomastia.

Correct Answer: A

Rationale: Placing the newborn on a radiant warmer is appropriate as it helps maintain the body temperature and prevent hypothermia in a newborn with an omphalocele defect. This is crucial for the infant's well-being and supports their physiological stability.

Correct Answer: D

Rationale: Early intervention services aim to support a diverse group of children and families without the need for a specific diagnosis. These services are inclusive and provided to all eligible children and families, regardless of their background or particular condition.

Correct Answer: B

Rationale: The correct answer is Perceptual Learning. In this stage, the toddler learns from sensory input and refines their movements over time, even though errors may still occur. This process involves improving coordination and fine-tuning motor skills based on feedback from repeated attempts.

Correct Answer: B

Rationale: In a child with a head injury, the development of diabetes insipidus can occur due to pituitary hypofunction, leading to a deficiency of antidiuretic hormone. An elevated sodium level (hypernatremia) is a key finding in diabetes insipidus due to the excessive loss of free water in the urine, resulting in increased sodium concentration in the blood.