Which instruction should the practical nurse (PN) reinforce with a client who is scheduled to begin external radiation therapy?

A. Place a heating pad on low setting to the area: Applying heat to the radiation site can increase skin sensitivity and the risk of burns or irritation. Clients should avoid external heat sources during treatment. B. Cleanse the skin to be treated with a mild soap: Gentle cleansing with mild soap helps maintain skin integrity without causing additional irritation. Proper hygiene minimizes infection risk and supports healthy skin during radiation therapy. C. Apply nonperfumed moisturizing lotion to the site: Moisturizers may be used only if approved by the radiation team; some products can interfere with radiation delivery. Therefore, this instruction should not be given without specific provider guidance. D. After radiation, place ice bags over the treatment area: Cold therapy is generally contraindicated immediately after radiation because it can further damage already sensitive skin. Clients should avoid applying ice directly to treated areas.