Choice A rationale:

Drinking an adequate amount of fluids is essential for patients with polycythemia to prevent blood clots and maintain blood flow.

This statement indicates a good understanding of self-care.

Choice B rationale:

Avoiding hot baths and showers is essential because heat can cause vasodilation and further increase blood flow, potentially exacerbating symptoms of polycythemia.

This statement also shows appropriate self-care knowledge.

Choice C rationale:

Smoking is a significant risk factor for polycythemia and other cardiovascular conditions.

Continuing to smoke, even with the intention to cut down, is not advisable and indicates a need for further education.

Smoking cessation is essential for managing polycythemia effectively.

Choice D rationale:

Monitoring vital signs regularly is crucial for patients with polycythemia to detect any changes in blood pressure, heart rate, or oxygen saturation.

This statement demonstrates an understanding of the importance of self-monitoring and is not a cause for further education.