What do you need to strain a person's urine when requested by a nurse?

To strain a person's urine, a strainer or gauze is the appropriate choice because its primary function is to catch any solid particles that may be present in the urine while allowing the liquid to pass through. This is crucial in monitoring the patient's condition, as any sediment or abnormal components may provide valuable information about their health.

Using filter paper, a funnel and tube, or a measuring cup would not be suitable for this specific task. Filter paper may not allow for easy liquid flow while capturing sediment effectively, and a funnel and tube are typically used for directing liquids rather than separating solids from liquids. A measuring cup, while useful for collecting urine samples, does not provide the necessary filtration needed for straining. Therefore, a strainer or gauze is the most effective and appropriate tool for this procedure, ensuring that the urine sample obtained is clear of any unwanted particulates.