The answer is B. Frostnip
Frostnip caused by superficial cooling of tissues without cellular destruction. It caused skin appears red and sometimes swollen. Frostnip doesn't permanently damage the skin even though it is very common for the patient to feel numbness around the freezed area
Say you would want to start eating healthier. You ask your parents or whoever goes grocery shopping in your family to buy less junk food and more healthy food. You can also ask them to keep you on the right track. Since there is less junk food in your house, your family would theoretically start eating better too.