Correct Answer: B

Rationale: The correct answer is B: Iodine. Iodine is essential for thyroid hormone production, and its deficiency can contribute to hypothyroidism. While calcium, vitamin C, and iron are important for overall health, they are not specifically related to thyroid function. Calcium is more associated with bone health, vitamin C with immune function, and iron with red blood cell production.

Correct Answer: C

Rationale: The correct instruction for a client diagnosed with Raynaud's phenomenon is to wear extra warm clothing during cold exposure. This is essential in preventing vasospasms triggered by cold temperatures, which can worsen symptoms of Raynaud's phenomenon. Choice A is incorrect because exacerbations can occur in any season. Choice B is irrelevant and not directly related to managing Raynaud's phenomenon. Choice D is also incorrect as sunlight exposure does not significantly impact Raynaud's phenomenon.

Correct Answer: B

Rationale: The correct answer is B: Iodine. Iodine is essential for thyroid hormone production, and its deficiency can contribute to hypothyroidism. While calcium, vitamin C, and iron are important for overall health, they are not specifically related to thyroid function. Calcium is more associated with bone health, vitamin C with immune function, and iron with red blood cell production.

Correct Answer: A

Rationale: When measuring the leg circumference of a client with bipedal edema, the best position to ensure accurate and consistent measurements is the dorsal recumbent position. This position allows the legs to be positioned comfortably, and the individual is lying on their back with legs extended, facilitating accurate measurement of the circumference without the influence of gravity. Sitting, standing, and supine positions may not provide optimal conditions for accurate leg circumference measurements, particularly in clients with bipedal edema where positioning and consistency are crucial. Sitting and standing positions may not allow for consistent leg positioning and could introduce errors due to the effects of gravity on the fluid distribution. The supine position, while similar to dorsal recumbent, may not be as comfortable for the client and could still be influenced by gravity when measuring leg circumference.

Correct Answer: B

Rationale: The correct answer is B: Planning. In the nursing process, planning involves developing long-term and preventive health goals in collaboration with the patient and their family. This step focuses on outlining the strategies and interventions needed to achieve the desired outcomes. Choice A, Evaluation, occurs after interventions are implemented to assess the effectiveness of the care provided. Choice C, Implementation, involves carrying out the planned interventions. Choice D, Assessment, is the initial step in the nursing process that involves collecting data to identify the patient's needs and health status.