Correct Answer: B

Rationale: Clients who smoke require more vitamin C due to increased oxidative stress and depletion of vitamin C. Smoking leads to the generation of free radicals in the body, causing oxidative stress and consuming higher levels of antioxidants like vitamin C. Choices A, C, and D are incorrect as they do not directly relate to the increased need for vitamin C as seen in smokers.

Correct Answer: A

Rationale: The correct answer is A. Roast beef is high in heme iron, which is best absorbed and helps treat iron deficiency anemia. Choices B, C, and D do not contain significant sources of iron, especially heme iron, making them less effective in treating iron deficiency anemia.

Correct Answer: D

Rationale: St. John's Wort is the correct answer because it can interact with antidepressants and oral contraceptives, potentially affecting their efficacy. Iron supplement, garlic, and green tea do not typically interact with antidepressants or oral contraceptives to the same extent as St. John's Wort.

Correct Answer: A

Rationale: The correct answer is A: Evaluation. Evaluation in nursing care involves assessing the effectiveness of the care plan, identifying strengths, weaknesses, and areas for improvement. This step helps ensure that the patient's needs are being met appropriately. Planning (choice B) involves developing the care plan based on the assessment data. Implementation (choice C) is the step where the care plan is put into action. Assessment (choice D) is the initial step in the nursing process that involves collecting and analyzing data about the patient's health status.

Correct Answer: C

Rationale: The correct answer is C, 'Mobilization.' In the context of the Army Medical Department, mobilization refers to the process of preparing and organizing medical personnel and resources for deployment during military operations. While preparation, training, and selection are important functions within the military medical field, mobilization specifically relates to the readiness and deployment of medical assets in response to operational requirements, making it the fourth major function of the Army Medical Department.