Correct Answer: A

Rationale: Patients with chronic renal failure should avoid potassium due to impaired kidney function. The kidneys may not effectively filter excess potassium from the blood, leading to hyperkalemia. Calcium, iron, and zinc do not need to be avoided specifically in chronic renal failure unless there are other underlying reasons or complications.

Correct Answer: A

Rationale: The nurse's best response should focus on providing empathetic support and guiding the client to explore further options, such as fertility specialists or treatments. Assessing intravenous fluids for rate and volume is not relevant to the client's concern about infertility. Changing surgical dressing, monitoring medication levels, and tracking meal intake are all unrelated to the client's fertility issues.

Correct Answer: D

Rationale: Elevating the head of the bed to 30 degrees reduces the risk of aspiration by promoting proper digestion and preventing reflux. Warming the formula to room temperature is essential to prevent discomfort and complications. Aspirating and measuring the gastric aspirate is not a recommended nursing action for monitoring enteral feeding via a nasogastric tube, as it can introduce the risk of introducing contaminants into the feeding tube. Therefore, choices A and B are incorrect, making choice D the correct answer.

Correct Answer: A

Rationale: Patients with chronic renal failure should avoid potassium due to impaired kidney function. The kidneys play a crucial role in regulating potassium levels in the body. In renal failure, the kidneys may not be able to excrete excess potassium effectively, leading to hyperkalemia. Calcium, iron, and zinc are not typically restricted in chronic renal failure unless there are specific individual circumstances, making them incorrect choices.

Correct Answer: B

Rationale: The appropriate category for the task 'Educate soldiers in the history and traditions of the service' is 'Personal/professional development.' This category involves educating individuals in various aspects, including history and traditions, to enhance their overall growth and knowledge. Choices A, C, and D are incorrect because 'Accountability' focuses on responsibility and answerability, 'Individual training' refers to specific skill development, and 'Military appearance/physical condition' pertains to physical fitness and presentation, none of which directly align with educating soldiers in history and traditions.