Correct Answer: D

Rationale: Understanding the underlying pathology and therapeutic techniques ensures that nursing care is not only reactive but also preventative, reducing the risk of complications.

Correct Answer: C

Rationale: Iodine is the correct answer. It is crucial for the synthesis of thyroid hormones by the thyroid gland. Without sufficient iodine, the thyroid cannot produce adequate amounts of hormones, leading to potential issues like hypothyroidism. Iron (Choice A), Zinc (Choice B), and Magnesium (Choice D) do not play a direct role in the synthesis of thyroid hormones, making them incorrect choices for this question.

Correct Answer: B

Rationale: The best snack choice for a preschool-age child recommended by the nurse would be a mini wheat bagel with peanut butter. This option provides a good balance of carbohydrates, protein, and healthy fats, making it a more nutritious choice compared to the other options. Fruit snacks may contain added sugars and lack essential nutrients. White toast with jelly is high in simple carbohydrates and sugars, providing less sustained energy. Sports drinks are often high in sugar and not necessary for a preschool-age child's snack.

Correct Answer: A

Rationale: Patient safety and efficacy of care depend on actions rooted in established nursing protocols that consider both the immediate and long-term needs of the patient.

Correct Answer: C

Rationale: Effective nursing care involves comprehensive assessments that address all aspects of a patient's condition, ensuring that interventions are appropriately targeted and outcomes are optimized.