Final answer:
When assessing the activity-exercise pattern related to the skin, an RN would ask the patient about (A) their sun exposure protection, since it's crucial in preventing skin damage and skin cancer.
Step-by-step explanation:
When assessing the activity-exercise pattern in relation to the skin, the Registered Nurse (RN) questions the patient regarding: A. protection against sun exposure. This concern is essential because excessive exposure to UV radiation from the sun is the leading cause of skin cancer.
Protection from the sun is critical to prevent damage to the skin cells and maintain skin health. While options B, C, and D may also be relevant to skin health, they do not directly relate to the activity-exercise pattern as much as sun protection does, as this involves adjusting daily activities to seek out or avoid direct sunlight which affects skin condition.