What should you avoid if you suspect someone has frostbite?

Answer: C — Rubbing the frozen area

If someone is suspected of having frostbite, it is crucial to avoid rubbing the frozen area. Rubbing can further damage the skin and underlying tissues because the frostbitten area may already be sensitive and compromised due to the lack of blood flow and cold exposure. Friction from rubbing could lead to additional injury or even cause the skin to break, increasing the risk of infection. In contrast, gently covering the area, warming it gradually, and seeking medical attention are all appropriate responses. Gently covering protects the affected area from additional injury, warming it gradually helps restore blood flow without causing more damage, and seeking medical help ensures that the person receives the necessary treatment to prevent complications.