Final answer:
To treat frostbitten skin, you should immerse it in warm (not hot) water, avoiding direct heat, rubbing, or exposure to cold air, and seek medical attention.
Step-by-step explanation:
To warm frostbitten skin, you should immerse it in warm (not hot) water. The correct answer to the question, 'How would you warm frostbitten skin?' is C. Immerse in warm (not hot) water. It is important to gently warm the affected area without causing further damage. Applying hot water directly or rubbing vigorously with a dry cloth can cause more harm, and exposing to cold air will not adequately warm the tissue and could cause more damage as well. The water should be warm to the touch but not so hot as to cause burns, typically around 104-107.6°F (40-42°C). Keep the skin submerged for 15-30 minutes, and seek medical attention as soon as possible.